Can cats eat spring onion?
Quick verdict
Unsafe
Key risk
Allium compounds destroy red blood cells; cats are especially sensitive, so avoid completely.
Why
Spring onions are highly toxic to cats.
Can cats eat spring onion, and why?
Spring onions are highly toxic to cats. Allium compounds destroy red blood cells; cats are especially sensitive, so avoid completely.
Cats are obligate carnivores: they must get most of their nutrition from meat and need nutrients such as taurine that only animal products provide. They lack some enzymes for processing plants and carbohydrates, so fruit and veg offer little benefit and can upset their stomach; many cats are also lactose intolerant.
Warning — what to watch for
Allium compounds destroy red blood cells; cats are especially sensitive, so avoid completely.
If your cat has eaten spring onion, don’t wait for symptoms — contact your vet immediately, or call the Animal PoisonLine on 01202 509000 (24/7, UK). Signs of a problem can include vomiting, diarrhoea, drooling, lethargy, tremors or loss of appetite.
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Frequently asked questions
Can cats eat spring onion?
Unsafe. Spring onions are highly toxic to cats.
What happens if my cat eats spring onion?
Allium compounds destroy red blood cells; cats are especially sensitive, so avoid completely. If your cat has eaten spring onion, contact your vet or the Animal PoisonLine (01202 509000) straight away — don’t wait for symptoms.
Is spring onion poisonous to cats?
Unsafe. Spring onions are highly toxic to cats.
Check spring onion for another pet