Why Is My Cat Drooling Excessively?

By Kaiser Khan , Founder Veterinary references checked with PetHealth+ ( process ) Last reviewed June 2026 Cite this page How we research & review

Sudden drooling may mean nausea, mouth pain, or toxin exposure. Lilies, certain plants, and human medications are common cat toxins.

Oral causes

Dental abscesses, ulcers, and foreign bodies.

Car sickness and kidney disease cause drooling before vomiting.

Lilies, permethrin (dog flea products), and essential oils.

Some drool when kneading — distinct from sudden heavy hypersalivation.

Yes — foul breath and pawing at mouth often accompany it.

With known toxin exposure or difficulty breathing — yes.

Motion sickness is common — ask your vet about anti-nausea options.