Typical behaviour
The cat tilts its head, eats slowly, and leaves some food behind. It may prefer soft food on one side.
Possible dental causes
Resorption of a tooth on one side, stomatitis affecting the opposite gums, a fractured canine, or a deep periodontal pocket.
- Resorption (FORL)
- Stomatitis
- A local fracture or infection
How the cause is established
A conscious examination often doesn't show the full picture. A full diagnosis under anaesthesia with X-rays is the most reliable route.
When to see a vet
- The cat eats on one side for more than a week
- Drooling, odour, or avoiding touch to the face accompany it
- The cat is losing weight or eating less
What not to do at home
- Don't ignore a "strange habit" without an examination
- Don't force the cat to eat on the painful side
- Don't delay a visit because appetite seems normal
Frequently asked questions
Most often it's a dental cause, but the vet also assesses other factors during the examination.
Yes, cats mask pain. One-sided chewing is a common compromise.