Is Lamb’s Quarters Toxic to Cats?
Also known as: Wild Spinach, Goosefoot, Pigweed, Chenopodium album · Chenopodium album
What makes it toxic
Saponins, oxalic acid and nitrates accumulated in leaves and seeds. Effects scale with quantity: small amounts irritate mildly, large chronic amounts strain kidneys and blood chemistry.
Warning signs to watch for
Mild drooling, vomiting or diarrhea after a substantial meal; chronic grazing can contribute to weakness and kidney stress. Occasional small nibbles usually pass unnoticed.
What to do if your cat eats it
No emergency response needed. Offer water, watch for a day, and simply prevent repeat access. A vet call is only sensible if vomiting persists or the cat grazes it habitually.
Common questions
Is lamb’s quarters safe for a cat that nibbles weeds in the yard?
A taste now and then is fine. The weed becomes a problem only with regular large grazing, which also applies to nitrates in plants grown on fertilized soil.
People eat this plant — why is it listed as mildly toxic?
Cooked young greens are a human foraging staple, but raw leaves concentrate saponins and oxalates, and pets eating it raw in bulk can get sick.
More plants checked for cats
This page is general educational information, not a substitute for professional veterinary advice. Every pet is different — if your animal ate something concerning, contact your veterinarian or a pet poison hotline right away. Checking what your pet can eat? Visit our sister site SafeOrToxic.