Is Curly Kale toxic to cats?

No — curly kale is listed by the ASPCA as non-toxic to cats. It is a sensible choice for a home with a cat; a curious nibble will not poison them, though no plant is meant to be eaten. Kale (Brassica oleracea) is not on the ASPCA list of toxic plants; the ASPCA lists Roman Kale as non-toxic to cats and dogs. However, brassicas contain thiocyanates and, like other crucifers, can cause gas, GI upset, or in very large repeated amounts thyroid or red-blood-cell effects, so feed only in small, occasional, cooked portions and not as a dietary staple.

Yes — the ASPCA lists curly kale as non-toxic to cats and dogs. A cat that chews a large amount of any foliage can still get a mild, brief stomach upset, so discourage grazing, but it will not be poisoned.

The ASPCA classification Growli uses applies to both cats and dogs: Curly Kale is non-toxic to dogs as well. See the full curly kale pet-safety guide for both species.

Reliable ASPCA non-toxic picks for a cat home include spider plant, calathea, parlor palm, peperomia, and most true ferns. Browse the best cats-safe plants list to check more before you buy.