Is Huernia hystrix toxic to cats?

Mildly. The ASPCA lists huernia hystrix as mildly toxic to cats — a chewing cat typically gets mouth irritation, drooling, and vomiting rather than a medical emergency, but it is still best kept out of reach. Not individually listed by the ASPCA. Huernia is a stapeliad in the family Apocynaceae - which also contains genuinely cardiotoxic plants - and reports on its pet safety conflict. Treat with caution, keep it out of reach, and verify with a vet if a pet chews it; ingestion may cause mild mouth or gastrointestinal irritation.

Not individually listed by the ASPCA. Huernia is a stapeliad in the family Apocynaceae - which also contains genuinely cardiotoxic plants - and reports on its pet safety conflict. Treat with caution, keep it out of reach, and verify with a vet if a pet chews it; ingestion may cause mild mouth or gastrointestinal irritation. Signs usually appear soon after chewing rather than hours later — watch for drooling, pawing at the mouth, vomiting, loss of appetite, or unusual lethargy after your cat has had access to huernia hystrix.

Stay calm. Remove any plant from your cat's mouth and take the plant away. Note how much was eaten and when, and do not induce vomiting unless told to. Call your vet or the ASPCA Animal Poison Control Center on (888) 426-4435 and follow their advice; a leaf or photo helps the vet treat it correctly.

The ASPCA classification Growli uses applies to both cats and dogs: Huernia hystrix is mildly toxic to dogs as well. See the full huernia hystrix pet-safety guide for both species.

For a similar look without the risk, see the best cats-safe plants list — every plant there is ASPCA non-toxic to cats and dogs.