Cat Excessive Drooling When Breathing: Causes and What to Do
Excessive drooling in cats can indicate dental disease, nausea, toxin exposure, or oral injury, and persistent drooling warrants veterinary evaluation.
Quick Answer
Cat excessive drooling during breathing may be related to specific triggers, environmental factors, or the body response to certain activities or times of day. Excessive drooling in cats may be caused by dental disease, oral injury, nausea, toxin exposure, respiratory infections, or stress. Unlike dogs, cats do not normally drool much, so noticeable drooling is usually a sign of a problem. A cat drooling persistently, especially with other signs, should be evaluated by a veterinarian. If the excessive drooling occurs consistently during breathing and is accompanied by other signs, contact a veterinarian for evaluation.
SYMPTOM TRIAGE
Answer a few questions about your cat's signs and receive general guidance on how urgently to seek veterinary care.
This tool does not diagnose conditions or replace a veterinarian.
What Excessive drooling Can Look Like
Excessive drooling (hypersalivation) in cats is noticeable wetness around the mouth, chin, or chest. The cat may have stringy saliva, may paw at its face, or may shake its head. Cats rarely drool without a reason. The drooling may be constant or intermittent. When excessive drooling occurs specifically during breathing, the timing may provide clues about the underlying cause. The pattern of excessive drooling during breathing can help a veterinarian narrow down possible explanations.
What May Be Associated with Excessive Drooling
Similar signs can have different causes, and the following are possible explanations a veterinarian may consider.
Dental Disease
Dental problems including gingivitis, tooth resorption, stomatitis, and oral infections are common causes of drooling. The cat may also have bad breath or difficulty eating.
Nausea
Nausea from gastrointestinal disease, motion sickness, or systemic conditions can cause drooling.
Toxin Exposure
Ingestion of toxic substances can cause excessive drooling. Many plants, household chemicals, and certain human foods are toxic to cats. The ASPCA Animal Poison Control Center is at 888-426-4435.
Oral Injury or Foreign Body
A cut, burn, or foreign object in the mouth can cause drooling.
Respiratory Infections
Upper respiratory infections can cause oral ulcers, particularly with feline calicivirus.
What to Monitor
Tracking details helps a veterinarian assess the situation.
- Duration: How long the drooling has been occurring
- Whether the cat is eating and drinking normally
- Other signs: Bad breath, pawing at mouth, vomiting, lethargy, or hiding
- Whether drooling is constant or intermittent
- Whether the cat has been exposed to potential toxins
- Gum and mouth appearance: Redness, swelling, or ulcers
- Whether excessive drooling occurs only during breathing or at other times as well
What You Can Safely Do Next
If your cat is drooling due to an obvious temporary stressor, the drooling may resolve once calm. Check the mouth for visible foreign objects if the cat is cooperative. Do not give human medications. If drooling is persistent, accompanied by other signs, or you suspect toxin exposure, contact a veterinarian immediately.
When to Contact a Veterinarian
Some situations require immediate veterinary attention, while others may allow for monitoring. When in doubt, contacting a veterinarian is the safest approach.
Emergency Signs
Contact a veterinarian or emergency clinic immediately if you observe any of the following:
- Known or suspected toxin ingestion
- Drooling with difficulty breathing
- Drooling with collapse, weakness, or extreme lethargy
- Drooling with a foreign object visible in the mouth
- Drooling with refusal to eat for more than 24 hours
These signs may indicate a serious condition that requires prompt evaluation. In the US, the ASPCA Animal Poison Control Center can be reached at 888-426-4435 if toxin exposure is suspected. In the UK, contact your veterinarian or the Veterinary Poisons Information Service for guidance.
Non-Urgent Signs
The following may warrant a routine veterinary call rather than emergency care:
- Brief drooling during a known stressor that resolves quickly
- Mild drooling that resolves within a short time with no other signs
Frequently Asked Questions
Why is my cat drooling suddenly?
Sudden drooling can be caused by dental disease, oral injury, nausea, toxin exposure, or stress. Because cats do not normally drool much, sudden onset is worth investigating. If persistent or accompanied by other signs, a veterinarian should evaluate the cat.
Can dental problems cause drooling in cats?
Yes, dental disease is one of the most common causes of excessive drooling in cats. Gingivitis, tooth resorption, and stomatitis can cause oral pain and inflammation that leads to drooling.
Why does my cat have excessive drooling during breathing?
Excessive drooling during breathing may be related to specific triggers, environmental factors, or the body response to certain conditions. Tracking when it occurs and what precedes it can help a veterinarian identify the pattern and possible cause.
SYMPTOM TRIAGE
If you are concerned about your cat's excessive drooling, use the symptom triage tool to get general guidance on how urgently you should seek veterinary care based on the signs you are observing.
This tool provides general information and does not replace a veterinarian's diagnosis.
Sources
- Cornell Feline Health Center. "Gastrointestinal Disorders in Cats." Retrieved July 2026.
- Merck Veterinary Manual. "Disorders of the Stomach and Intestines in Cats." Retrieved July 2026.
- VCA Hospitals. "Vomiting in Cats." Retrieved July 2026.
- ASPCA Animal Poison Control. "Poisonous Substances and Pet Safety." Retrieved July 2026. Phone: 888-426-4435.
Disclaimer
This article and the PawAI Symptom Triage tool provide general information and do not replace examination, diagnosis, or treatment by a licensed veterinarian. If your cat shows emergency signs, contact a veterinarian or emergency clinic immediately.