Why Does My Dog Keep Drooling?
6 Nov 2026 · Dogs · 5 min read
Medical draft · pending veterinary review
Normal drooling
Breeds with loose lips such as Saint Bernards and Mastiffs naturally drool, especially around food or after drinking.
Common medical causes
- Dental disease, broken teeth or mouth ulcers
- Something stuck in the mouth or throat
- Nausea or car sickness
- Toxins (e.g. toads, chemicals, certain plants)
- Heatstroke
Sudden heavy drooling with panting, weakness, vomiting or seizures can be an emergency — see a vet immediately.
What you can check
Gently look for redness, a bad smell, tartar or a foreign object. Do not put your hand deep into the mouth of a distressed dog.
Prevention
Regular tooth brushing and annual dental checks help prevent painful dental disease, one of the most common causes of drooling.
References
Disclaimer: this article is for general information only and is not a substitute for a veterinary examination.