Is Cavolo Nero toxic to cats?

No — cavolo nero 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. Cavolo nero is a kale, Brassica oleracea, which is not on the ASPCA toxic-plant list; the ASPCA lists Roman Kale as non-toxic to cats and dogs. As with all brassicas, the thiocyanate and isothiocyanate content means large or frequent feeding can cause gas, GI upset, or thyroid and blood effects, so offer only small, occasional, cooked amounts rather than as a regular food.

Yes — the ASPCA lists cavolo nero 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: Cavolo Nero is non-toxic to dogs as well. See the full cavolo nero 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.