Why is my old dog drooling? 9 causes and what to do

You've noticed it on the floor, on the couch cushions, maybe on your pant leg: a trail of drool that your senior dog never used to leave behind. Perhaps it's a thin string of saliva hanging from their lip, or a wet spot on their bed that wasn't there before. Maybe your dog's chin is damp all the time now, or you've found puddles of thick, ropy drool in places where your dog rests.

While some breeds are naturally heavy droolers, new or increased drooling in a senior dog is almost always a sign that something has changed. Dogs don't suddenly start producing more saliva for no reason. Drooling, known medically as ptyalism or hypersalivation, is the body's response to pain, nausea, irritation, or a neurological signal that something isn't working right. In older dogs, the causes range from treatable dental problems to more serious conditions like organ disease or tumors.

This guide covers the most common reasons senior dogs develop excessive drooling, how to identify the likely cause, when to see the vet, and what you can do to help your aging dog.

What counts as "excessive" drooling?

Before we dive into causes, it's important to understand what's normal versus what's concerning. All dogs drool to some extent. Saliva plays a critical role in digestion, lubricating food and beginning the breakdown process before it reaches the stomach. Some drooling is a natural response to the sight or smell of food, excitement, or mild stress.

Certain breeds are known for heavy drooling as a normal trait. Breeds with loose, pendulous lips and large jowls, such as Saint Bernards, Bloodhounds, Mastiffs, Newfoundlands, Basset Hounds, and Bulldogs, drool considerably more than other breeds because their lip structure doesn't contain saliva as effectively. If you have one of these breeds, a baseline level of drooling is expected throughout their life.

What you're watching for is a change from your dog's normal pattern. Excessive drooling in a senior dog means:

• Drooling that is noticeably more than what your dog has always produced
• Drooling that occurs constantly, not just around mealtime or when excited
• Thick, ropy, or discolored saliva (yellowish, brownish, or blood-tinged)
• Drooling accompanied by other symptoms like bad breath, difficulty eating, pawing at the mouth, or behavioral changes
• Drooling from one side of the mouth only
• New drooling in a breed that has never been a drooler

If your dog's drooling has changed in amount, consistency, or timing, something is causing it, and it's worth investigating.

9 common causes of excessive drooling in senior dogs

1. Dental disease and tooth problems

Dental disease is the single most common cause of excessive drooling in older dogs. By the time a dog reaches their senior years, the vast majority have some degree of periodontal disease, and many have dental problems severe enough to cause significant pain and increased saliva production. The body produces extra saliva as a response to oral pain and inflammation, essentially trying to flush and soothe the irritated tissues.

Dental problems in senior dogs can include:

• Advanced periodontal disease: Infection and inflammation of the gums that has progressed to affect the bone around the tooth roots. The gums may be red, swollen, receding, or bleeding
• Tooth root abscesses: Bacterial infection at the root of a tooth that creates a pocket of pus. Abscesses are extremely painful and can cause swelling on the face or jaw, sometimes with a draining wound below the eye
• Fractured or broken teeth: Cracked teeth expose the sensitive pulp inside, causing pain especially when eating or drinking
• Loose or rotting teeth: Teeth that have lost their bone support may wobble, shift, or hang from the gum, causing chronic irritation
• Oral ulcers or sores: Painful lesions on the gums, tongue, or inner cheeks that make the mouth uncomfortable

Signs that dental disease is causing the drooling:

• Bad breath, often described as foul, rotting, or metallic
• Drool that is blood-tinged or has a brownish color
• Difficulty eating, dropping food, or chewing on only one side
• Pawing at the mouth or rubbing the face on the ground
• Reluctance to chew hard treats or toys they used to enjoy
• Visible tartar buildup (brown or yellow crusty material on teeth), red gums, or missing teeth
• Swelling on one side of the face or under the jaw
• Head shaking or tilting

Dental disease requires veterinary treatment. Your vet will need to examine your dog's mouth and will likely recommend a dental cleaning under anesthesia, which allows them to fully assess each tooth, take X-rays to evaluate the roots, and extract any teeth that are damaged beyond repair. While anesthesia in senior dogs carries slightly higher risk, modern veterinary anesthesia protocols are very safe, and the benefits of treating painful dental disease typically far outweigh the risks. Many owners report that their senior dog seems years younger after a dental procedure, eating better, playing more, and drooling far less.

2. Oral masses or tumors

Oral tumors become more common as dogs age, and excessive drooling is often one of the first noticeable signs. Growths in the mouth, whether benign or malignant, can irritate tissues, interfere with swallowing, cause bleeding, and trigger increased saliva production. Some tumors grow slowly and may go unnoticed for weeks or months, especially if they develop in the back of the mouth or under the tongue.

Common types of oral tumors in senior dogs include:

• Melanoma: The most common malignant oral tumor in dogs. Often appears as a dark or pigmented mass on the gums, tongue, or palate, though some are unpigmented and pink
• Squamous cell carcinoma: Usually found on the gums near the front teeth or under the tongue. Often appears as a raised, irregular, ulcerated mass
• Fibrosarcoma: A tumor that arises from the connective tissue in the mouth. Tends to appear on the gums or palate
• Epulides (now called peripheral odontogenic tumors): Usually benign growths that arise from the gum tissue around the teeth. Can become quite large and interfere with eating
• Papillomas: Benign wart-like growths that are more common in younger dogs but can occur in seniors, especially those with compromised immune systems

Signs that an oral mass may be causing the drooling:

• Drooling that may be blood-tinged or foul-smelling
• A visible lump or mass inside the mouth, which may be pink, red, dark, or ulcerated
• Difficulty eating or swallowing, or dropping food
• Facial swelling, especially on one side
• Loose teeth with no apparent dental disease
• Weight loss due to difficulty eating
• Reluctance to have the mouth examined or touched
• Bleeding from the mouth

Any new lump or mass in your senior dog's mouth should be evaluated by your veterinarian as soon as possible. Early detection significantly improves outcomes for many types of oral tumors. Your vet will likely recommend a biopsy to determine whether the growth is benign or malignant, which guides treatment decisions. Treatment options may include surgery, radiation therapy, or a combination, depending on the type and location of the tumor.

3. Nausea and gastrointestinal problems

Nausea is one of the most common triggers for drooling in dogs of any age, and senior dogs are especially prone to gastrointestinal upset. When a dog feels nauseous, the body ramps up saliva production as a protective mechanism. The excess saliva helps protect the esophagus and mouth from stomach acid if vomiting occurs. You may notice your dog drooling heavily, licking their lips repeatedly, swallowing frequently, or appearing restless before an episode of vomiting.

Causes of nausea-related drooling in senior dogs include:

• Gastrointestinal disease: Inflammatory bowel disease, gastritis, or stomach ulcers that become more common with age
• Pancreatitis: Inflammation of the pancreas, which causes severe nausea, abdominal pain, vomiting, and drooling. Can range from mild to life-threatening
• Medication side effects: Many medications prescribed to senior dogs, including NSAIDs for arthritis pain, antibiotics, and chemotherapy drugs, can cause nausea as a side effect
• Dietary indiscretion: Eating something that upsets the stomach, from garbage to rich table food
• Acid reflux: Stomach acid backing up into the esophagus, which becomes more common in older dogs and often worsens at night or on an empty stomach
• Motion sickness: Some dogs develop or worsen car sickness as they age, particularly those with vestibular issues

Signs that nausea is behind the drooling:

• Repeated lip licking and swallowing
• Restlessness, pacing, or an inability to get comfortable
• Decreased appetite or turning away from food
• Vomiting or dry heaving
• Eating grass
• A hunched posture or tense abdomen
• Drooling episodes that come and go rather than being constant

Occasional mild nausea may resolve on its own, but persistent or recurring nausea in a senior dog warrants a vet visit. Your vet can determine the underlying cause and prescribe anti-nausea medications like maropitant (Cerenia) or metoclopramide to provide relief. If your dog's nausea seems related to a new medication, do not stop the medication on your own but contact your vet about alternatives or adding an anti-nausea drug alongside it.

4. Kidney disease

Chronic kidney disease (CKD) is common in senior dogs, and as the kidneys lose their ability to filter waste products from the blood, toxins build up in the body. This condition, called uremia, causes a chemical irritation and metallic taste in the mouth that triggers excessive drooling. Drooling related to kidney disease often has a distinctive quality: the saliva may be thick, and the dog's breath often has a chemical, ammonia-like, or urine-like smell.

As kidney disease progresses, uremic toxins can also cause painful ulcers on the gums, tongue, and inner cheeks, further increasing drooling and making eating uncomfortable.

Signs that kidney disease may be causing the drooling:

• Increased thirst and urination, often the earliest noticeable sign
• Breath that smells like ammonia or chemicals
• Decreased appetite, especially for protein-rich foods
• Weight loss and muscle wasting
• Vomiting, especially in the morning or on an empty stomach
• Lethargy and decreased energy
• Pale gums
• Oral ulcers or a brownish discoloration on the tongue
• Dehydration despite drinking large amounts of water

Kidney disease is diagnosed with blood work (elevated BUN and creatinine levels) and urinalysis. While CKD cannot be cured, it can often be managed for months to years with a combination of prescription kidney diet, subcutaneous fluid therapy, phosphorus binders, and medications to control nausea and maintain appetite. Early detection through routine senior blood work is key, as treatment is most effective when started before the disease becomes advanced. If your senior dog is drooling and drinking more water than usual, ask your vet about kidney screening.

5. Liver disease

Like kidney disease, liver disease leads to a buildup of toxins in the bloodstream that can cause nausea and excessive drooling. The liver is responsible for filtering and processing a vast number of substances, and when it's compromised, the accumulation of toxins (particularly ammonia) affects the brain and gastrointestinal system, producing persistent nausea and hypersalivation.

Liver disease in senior dogs can develop from chronic hepatitis, liver tumors, Cushing's disease (which can cause secondary liver changes), toxin exposure, or long-term use of certain medications.

Signs that liver disease may be involved:

• Drooling accompanied by persistent nausea or vomiting
• Yellowing of the whites of the eyes, gums, or skin (jaundice), particularly noticeable on the ear flaps and belly
• Dark or orange-colored urine
• Loss of appetite and weight loss
• Lethargy and weakness
• Swollen or distended abdomen (fluid accumulation called ascites)
• Behavioral changes, confusion, or disorientation (hepatic encephalopathy caused by ammonia affecting the brain)
• Increased thirst and urination

Liver disease is diagnosed through blood work (elevated liver enzymes, bilirubin, and bile acids), ultrasound, and sometimes liver biopsy. Treatment depends on the underlying cause and may include dietary changes, medications to support liver function, antioxidants like SAMe and milk thistle, antibiotics if infection is involved, and management of fluid accumulation. Early detection improves the prognosis, so if your senior dog is drooling excessively along with any of these signs, see your vet promptly.

6. Foreign object stuck in the mouth or throat

A foreign object lodged in the mouth, between the teeth, stuck in the gums, or caught in the throat is a common and often overlooked cause of sudden drooling in dogs. Senior dogs may be less discerning about what they pick up, and their weakened teeth and gums can make it easier for objects to become embedded.

Common culprits include:

• Bone fragments or splinters wedged between teeth or embedded in the gums
• Sticks or wood splinters lodged in the palate or between teeth
• String, thread, or linear objects caught around the base of the tongue (especially dangerous because pulling can cause serious internal damage)
• Pieces of toys, rawhide, or chews stuck in the teeth or roof of the mouth
• Burrs, foxtails, or plant material embedded in the gums or throat

Signs of a foreign object in the mouth:

• Sudden onset of heavy drooling, often within minutes to hours
• Pawing at the mouth, face rubbing, or head shaking
• Gagging, retching, or difficulty swallowing
• Refusing to eat or drink
• Visible distress or agitation
• Bad breath or bloody drool if the object has caused tissue damage
• The dog may allow you to look in their mouth, or they may resist due to pain

If you can safely see a foreign object in your dog's mouth, you may be able to gently remove it with your fingers or tweezers, but use extreme caution. Never pull on string or thread visible in the mouth, as it may be wrapped around structures deeper inside. If you can't see the object, if your dog is in significant distress, or if the object appears deeply embedded, take your dog to the vet immediately. Sedation may be needed for safe removal, and your vet can check for any damage the object may have caused.

7. Neurological conditions

The nervous system controls the muscles involved in swallowing and the glands that produce saliva. When neurological problems develop, which become more common in senior dogs, the normal coordination of swallowing can be disrupted, leading to drooling not because the dog is producing more saliva but because they can't swallow it effectively.

Neurological causes of drooling in senior dogs include:

• Facial nerve paralysis: Damage to the facial nerve (cranial nerve VII) causes one side of the face to droop, including the lip, leading to drooling from the affected side. This can result from ear infections, trauma, tumors, or idiopathic (unknown) causes
• Trigeminal nerve disorder: Affects the nerve that controls jaw movement. Dogs may be unable to close their mouth properly, resulting in a dropped jaw and constant drooling
• Vestibular disease: While primarily causing balance problems, severe vestibular episodes with intense nausea can trigger heavy drooling
• Brain tumors: Tumors affecting areas of the brain that control swallowing, facial muscle function, or nausea can cause drooling along with other neurological signs
• Seizures: Drooling often occurs during or after seizure activity. Some dogs have partial seizures that primarily manifest as facial twitching, lip-smacking, and drooling
• Cognitive dysfunction syndrome (canine dementia): Some dogs with advanced CDS develop changes in swallowing coordination or forget to swallow normally

Signs that a neurological issue may be causing the drooling:

• Drooling from one side of the mouth only
• Drooping of the lip, eyelid, or ear on one side of the face
• Difficulty picking up food or keeping it in the mouth
• Head tilt, circling, or loss of balance
• A dropped jaw or inability to close the mouth
• Changes in behavior, confusion, or disorientation
• Muscle twitching or tremors, particularly in the face
• Difficulty walking or stumbling

Neurological causes of drooling require veterinary evaluation, often including a thorough neurological examination and potentially advanced imaging (MRI or CT scan). Treatment depends on the specific condition. Facial nerve paralysis is sometimes temporary and may resolve on its own within weeks, while conditions like brain tumors may require more complex treatment. If your dog suddenly develops one-sided drooling with facial drooping, see your vet promptly to rule out serious causes.

8. Heatstroke and overheating

Senior dogs are significantly more vulnerable to heat than younger dogs, and excessive drooling is one of the earliest and most recognizable warning signs of overheating. As dogs age, their ability to regulate body temperature declines. They may have heart disease, respiratory problems, or excess weight that makes cooling down harder. Medications common in senior dogs can also affect heat tolerance.

Dogs cool themselves primarily by panting, which evaporates moisture from the tongue and respiratory tract. When this system is overwhelmed, the body produces excessive saliva as part of its desperate attempt to cool down. The drool may become thick and ropy as dehydration sets in.

Signs that your senior dog is overheating:

• Heavy, excessive drooling with thick or sticky saliva
• Intense panting that doesn't slow down with rest
• Bright red tongue and gums that may progress to pale, gray, or blue as the condition worsens
• Rapid heart rate
• Lethargy, weakness, or wobbling
• Vomiting or diarrhea
• Glazed eyes or a dazed expression
• Collapse or inability to stand

Heatstroke is a life-threatening emergency. If you suspect your senior dog is overheating, move them to a cool area immediately, offer cool (not ice-cold) water, apply cool wet towels to the groin, armpits, and neck, and get to a vet as quickly as possible. Do not use ice or ice-cold water, as this constricts blood vessels and actually slows cooling. Prevention is critical for senior dogs: avoid exercise during the heat of the day, always provide shade and fresh water, never leave your dog in a car even for a few minutes, and be aware that flat-faced breeds and dogs on certain medications are at especially high risk.

9. Poisoning or toxin exposure

Sudden, profuse drooling can be a sign that your dog has been exposed to a toxic substance. Many common household items, plants, foods, and chemicals can cause a toxic reaction that includes heavy drooling, and senior dogs may be more susceptible to the effects of toxins due to compromised liver or kidney function.

Substances that commonly cause drooling in dogs include:

• Household plants: Dieffenbachia, philodendron, sago palm, azalea, and many lilies contain irritating or toxic compounds
• Cleaning products: Bleach, detergents, and other household chemicals that a dog may lick from surfaces
• Toads: Certain toad species (Bufo toads) secrete toxins from their skin that cause immediate, profuse drooling, pawing at the mouth, and can be life-threatening
• Insecticides and pesticides: Products applied to lawns, gardens, or used for flea and tick control can cause toxic reactions
• Human medications: Many common medications including ibuprofen, acetaminophen, and antidepressants are toxic to dogs
• Spoiled food: Mycotoxins from moldy food can cause drooling, vomiting, and tremors
• Caustic or bitter substances: Even non-toxic bitter substances (like bitter apple spray) can trigger dramatic drooling

Signs that toxin exposure may be causing the drooling:

• Sudden onset of heavy drooling
• Pawing at the mouth, especially after being outdoors or in a new area
• Vomiting or retching
• Trembling, shaking, or muscle tremors
• Difficulty breathing
• Diarrhea
• Disorientation, stumbling, or seizures
• Burns or redness on the tongue, gums, or lips (from caustic substances)

If you suspect your dog has ingested or been exposed to a toxin, this is an emergency. Do not attempt to induce vomiting unless specifically instructed by a veterinarian or poison control, as some substances cause more damage on the way back up. Contact your vet, an emergency animal hospital, or the ASPCA Animal Poison Control Center (888-426-4435) immediately. Bring any packaging or information about the suspected substance with you to the vet.

When to see the vet

Not all drooling requires an emergency vet visit, but most cases of new or increased drooling in a senior dog should be evaluated. Here's a guide for timing:

See the vet immediately (emergency)

• Sudden, profuse drooling after possible toxin exposure
• Drooling with signs of heatstroke (heavy panting, bright red gums, weakness, collapse)
• Drooling with difficulty breathing or blue-tinged gums
• A dropped or locked jaw (unable to close the mouth)
• Drooling with seizures, collapse, or loss of consciousness
• Drooling with a severely swollen face or throat
• Profuse bloody drool

See the vet within 24-48 hours

• New drooling that persists for more than a day
• Drooling with decreased appetite or difficulty eating
• One-sided drooling or facial drooping
• Drooling with bad breath, especially if newly worsened
• Drooling accompanied by vomiting that doesn't resolve
• A visible lump or mass in the mouth
• Drooling with increased thirst, urination, or weight loss

Schedule a regular vet appointment

• Gradually increasing drooling over weeks or months
• Mild drooling that seems related to specific triggers (car rides, excitement, food anticipation)
• Drooling in a breed that is expected to drool but the amount seems to have increased
• You want to rule out dental disease during your dog's next checkup

What to expect at the vet

When you bring your senior dog in for excessive drooling, your vet will take a systematic approach to find the cause. Here's what to expect:

• History: Your vet will ask when the drooling started, whether it's constant or intermittent, any other symptoms you've noticed, your dog's current medications, and whether there's been any possible exposure to toxins or foreign objects
• Physical examination: A thorough exam with special attention to the mouth, teeth, gums, tongue, and throat. Your vet will check for masses, broken teeth, foreign objects, ulcers, swelling, and signs of pain. They'll also examine the face for asymmetry and test cranial nerve function
• Blood work: A complete blood count (CBC) and biochemistry panel to assess kidney function, liver function, blood sugar, and check for signs of infection or inflammation. This is especially important in senior dogs where organ disease is a common cause
• Urinalysis: Often recommended alongside blood work to further evaluate kidney function
• Dental X-rays: If dental disease is suspected, X-rays taken under anesthesia reveal the health of tooth roots and jaw bone that can't be seen on the surface
• Additional imaging: X-rays or ultrasound of the chest and abdomen if organ disease, tumors, or other internal conditions are suspected. MRI or CT scan may be recommended if neurological causes are likely

How to help your drooling senior dog at home

While you work with your vet to identify and treat the underlying cause, there are several things you can do to keep your dog comfortable and manage the drooling at home:

• Keep the chin and chest clean: Wipe your dog's chin, lips, and chest regularly with a clean, damp cloth to prevent skin irritation, rashes, and bacterial or yeast infections that can develop from chronic moisture. Dry the area thoroughly after wiping
• Use a bandana or drool bib: For heavy droolers, a bandana loosely tied around the neck can catch drool before it soaks the chest. Change it frequently to keep the area dry
• Protect surfaces: Place washable blankets or towels on your dog's favorite resting spots, in the car, and on furniture. Waterproof bed liners can protect dog beds from becoming damp and smelly
• Maintain oral hygiene: If your dog tolerates it, gentle tooth brushing with dog-specific toothpaste can help reduce bacterial buildup. Dental water additives may also help, though they're not a substitute for professional dental care
• Monitor water intake: Drooling can contribute to dehydration, especially if your dog is also nauseous and not drinking well. Always provide fresh, clean water and monitor whether your dog is drinking normally
• Track the pattern: Note when the drooling is worse, what triggers seem to increase it, whether it's coming from both sides or one side, and any other symptoms that accompany it. This information is invaluable for your vet
• Adjust feeding: If your dog is having trouble eating, try softer foods, warmed food (which is more aromatic and appealing), smaller and more frequent meals, or elevated food bowls to reduce strain while eating

Preventing drooling-related complications

Chronic drooling can lead to secondary problems if not managed:

• Lip fold dermatitis: Constant moisture in the folds around the mouth creates a breeding ground for bacteria and yeast. Keep these areas clean and dry. Your vet may prescribe medicated wipes or topical treatments if infection develops
• Dehydration: Dogs who drool excessively lose more fluid than normal. Combined with decreased drinking from nausea or mouth pain, this can lead to dehydration. Watch for dry gums, loss of skin elasticity, sunken eyes, and lethargy
• Skin staining and irritation: Saliva can stain light-colored fur and irritate the skin of the chest and front legs. Regular cleaning and keeping the fur trimmed in these areas can help
• Aspiration risk: Dogs with neurological conditions that affect swallowing may be at risk of inhaling saliva into the lungs, which can cause aspiration pneumonia. If your dog frequently coughs or gags while drooling, tell your vet

The role of routine senior wellness exams

Many of the conditions that cause drooling in senior dogs, particularly kidney disease, liver disease, and dental disease, can be detected early through routine wellness exams and blood work, often before your dog shows any obvious symptoms at home. Most veterinarians recommend that senior dogs (age 7 and older for large breeds, 10 and older for small breeds) have wellness exams and blood work every 6 months rather than annually.

Regular dental checkups are especially important. Because dental disease develops gradually and dogs are remarkably good at hiding oral pain, severe periodontal disease often goes unnoticed until it causes drooling, difficulty eating, or a foul odor. Catching dental problems early means less pain for your dog and typically simpler, less expensive treatment.

Frequently asked questions

Is it normal for old dogs to drool more?

A slight increase in drooling can occur as dogs age due to reduced muscle tone around the mouth, but a noticeable increase in drooling is not a normal part of aging. It typically indicates an underlying issue that should be evaluated. Don't dismiss excessive drooling as "just old age" without having your vet take a look.

My dog only drools on one side. What does that mean?

One-sided drooling is particularly significant because it usually points to a localized problem. Common causes include a tooth abscess or broken tooth on that side, an oral mass or tumor, a foreign object stuck in the gum or cheek, or facial nerve damage causing lip drooping on one side. One-sided drooling warrants a vet visit, as it helps narrow down the diagnosis considerably.

My dog drools more at night. Why?

Nighttime drooling can be caused by acid reflux (stomach acid irritating the esophagus when lying down), sleeping position (gravity causing saliva to pool and drip), nausea that worsens on an empty stomach, or pain that intensifies at rest when there are fewer distractions. If you notice wet spots on your dog's bed in the morning, mention it to your vet. For acid reflux, feeding a small meal before bed can sometimes help.

Can medications cause my old dog to drool?

Yes. Several medications commonly prescribed to senior dogs can cause increased drooling as a side effect. These include some antibiotics (particularly metronidazole), certain pain medications, sedatives, and bitter-tasting medications that stimulate saliva production when given orally. If drooling started shortly after beginning a new medication, let your vet know. They may be able to adjust the dose, switch to a different medication, or suggest ways to minimize the side effect.

Should I be concerned about blood in my dog's drool?

Blood-tinged drool should always be investigated. It can come from bleeding gums due to dental disease, a cut or wound in the mouth, an oral tumor, or a foreign object that has caused tissue damage. While a small amount of blood from mildly inflamed gums may not be an emergency, persistent or significant bleeding from the mouth should be seen by your vet within 24 hours.

How can I check my dog's mouth at home?

Gently lift your dog's lips on each side to examine the outer surfaces of the teeth and gums. Look for redness, swelling, bleeding, tartar buildup, broken teeth, or masses. If your dog will allow it, gently open their mouth by placing your hand over the top of the muzzle and tilting the head up slightly while pressing down on the lower jaw. Check the tongue, the roof of the mouth, and as far back as you can see. Never force the mouth open if your dog resists, as this can cause pain if there's a dental problem, and a painful dog may bite reflexively. If you can't examine the mouth safely, leave it to your vet.

New or excessive drooling in your senior dog is their body's way of signaling that something needs attention. Whether it's a painful tooth that's been quietly worsening, nausea from a struggling organ, or a growth that needs early treatment, drooling is a symptom worth investigating rather than ignoring. The good news is that many causes of drooling in older dogs are treatable, especially when caught early. A visit to your vet, a thorough oral exam, and basic blood work can often identify the problem and set your dog on the path to feeling more comfortable. Don't wait for the drooling to resolve on its own. Your senior dog is counting on you to notice the signs and get them the help they need.