Is Rattlesnake Master toxic to dogs?

Mildly. The ASPCA lists rattlesnake master as mildly toxic to dogs — a chewing dog typically gets mouth irritation, drooling, and vomiting rather than a medical emergency, but it is still best kept out of reach. Eryngium yuccifolium is not individually listed by the ASPCA's toxic or non-toxic plant database; treat with caution and verify with a vet. No specific toxic principle is documented for the plant, but the spiny leaf margins can cause mechanical injury and ingestion may cause mild gastrointestinal upset, so keep curious pets away.

Eryngium yuccifolium is not individually listed by the ASPCA's toxic or non-toxic plant database; treat with caution and verify with a vet. No specific toxic principle is documented for the plant, but the spiny leaf margins can cause mechanical injury and ingestion may cause mild gastrointestinal upset, so keep curious pets away. 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 dog has had access to rattlesnake master.

Stay calm. Remove any plant from your dog'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: Rattlesnake Master is mildly toxic to cats as well. See the full rattlesnake master pet-safety guide for both species.

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