Dogs · Fruits & Vegetables
Can dogs or cats eat onions?
Not safe severity: severe
The problem compound: N-propyl disulfide (destroys red blood cells). For: dogs & cats.
Toxic to both dogs AND cats, and cats are more sensitive. Cooked onions are not safer — the compound survives heat. Onion powder is the hidden one: chips, broths, leftovers.
Symptoms to watch
lethargypale gumsweaknessred/brown urinebreathing fast
Safer alternative
Plain unseasoned veggies like carrots or green beans
Sources: ASPCA Animal Poison Control + Merck Veterinary Manual. Reference information — not a substitute for your veterinarian, who knows your pet's history.