Why?
Mandarins are sweeter than oranges, but they're still citrus: the pulp is acidic and the peel contains essential oils and psoralens. Cats process these compounds poorly, and they can irritate the stomach and gut. The sugar doesn't help either.
How much?
No amount is recommended, not even a single segment. Watch for peels left on the coffee table in winter.
The risks
- Vomiting and diarrhea
- Drooling and mouth irritation
- Lethargy if the peel was chewed
- Skin sensitivity to sunlight (psoralens)
Your cat ate some: what now?
A stolen segment usually causes, at worst, a passing stomach upset: watch your cat for 24 to 48 hours. If your cat chewed the peel, ate several segments, or is vomiting, drooling or lethargic, call your vet. Don't try to make your cat vomit yourself.
Better options
To share snack time, a cat treat or a small piece of plain cooked turkey is perfect. If you want fruit, two or three blueberries are safe.
Common questions
What about clementines and tangerines?
Same rule: they're close relatives of the mandarin and just as much citrus. Avoid them too, peels included.
My cat ate a mandarin segment, what should I do?
Don't panic: it's mainly an irritant. Watch your cat for 24 to 48 hours, and call your vet if there's repeated vomiting, heavy drooling or lethargy.
This information is general and does not replace advice from a veterinarian. If your cat has swallowed something toxic, call your vet or an animal poison control center right away, without waiting for symptoms.