Is Sempervivum 'Killer' toxic to cats?

No — sempervivum 'killer' 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. Considered non-toxic to cats and dogs. Sempervivum is not individually listed by the ASPCA, but the genus has no toxic members and is widely regarded as pet-safe, so 'Killer' poses no ingestion poisoning risk to pets; despite the cultivar name it is harmless to animals, and the sap only rarely irritates sensitive human skin.

Yes — the ASPCA lists sempervivum 'killer' 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: Sempervivum 'Killer' is non-toxic to dogs as well. See the full sempervivum 'killer' 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.