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If your dog ate bishop's cap cactus — do this now

  1. Take the plant away and clear any pieces from their mouth.
  2. Do not induce vomiting unless told to by a professional.
  3. Call your vet or the ASPCA Animal Poison Control Center on (888) 426-4435 now.

Bishop's Cap Cactus is mildly toxic to dogs (ASPCA).

Pet emergency

My dog ate Bishop's Cap Cactus — what to do

Step by step

  1. Take bishop's cap cactus away and remove any plant material from your dog's mouth so they cannot eat more.
  2. Note roughly how much was eaten and when — this helps the vet judge the risk.
  3. Do NOT induce vomiting unless a vet or poison-control specialist tells you to.
  4. Call your vet or the ASPCA Animal Poison Control Center on (888) 426-4435 (a consultation fee may apply) and follow their advice.
  5. Watch for drooling, pawing at the mouth, vomiting, loss of appetite, or lethargy, and bring a leaf or photo to the appointment.

This is general guidance, not veterinary advice. Pets vary, and a reaction may be to soil, fertiliser, or pesticide as well as the plant. When in doubt, call your vet or the ASPCA Animal Poison Control Center on (888) 426-4435.

My dog ate bishop's cap cactus — FAQ

Is bishop's cap cactus poisonous to dogs?

Yes — the ASPCA lists Bishop's Cap Cactus (Astrophytum myriostigma) as mildly toxic to dogs. Astrophytum myriostigma is not individually listed in the ASPCA's toxic or non-toxic plant database, and cacti contain no recognised toxic principle. Note that the ASPCA "Star Cactus" guidance some sources cite actually refers to Haworthia, a different genus - so there is no same-genus ASPCA listing for it. It is generally regarded as low-risk and is spineless, but because it is not individually verified, treat ingestion as a potential GI irritant and verify with your vet if a pet eats it.

How serious is it if my dog ate bishop's cap cactus?

Bishop's Cap Cactus is mildly toxic, so most dogs get short-lived mouth irritation, drooling, and vomiting rather than a life-threatening reaction. It is still worth a vet call to be safe, especially if your dog ate a lot or symptoms persist.

What symptoms should I watch for?

Signs usually appear soon after chewing: drooling, pawing at the mouth, vomiting, loss of appetite, or unusual lethargy. Astrophytum myriostigma is not individually listed in the ASPCA's toxic or non-toxic plant database, and cacti contain no recognised toxic principle. Note that the ASPCA "Star Cactus" guidance some sources cite actually refers to Haworthia, a different genus - so there is no same-genus ASPCA listing for it. It is generally regarded as low-risk and is spineless, but because it is not individually verified, treat ingestion as a potential GI irritant and verify with your vet if a pet eats it. Any worsening or persistent symptoms warrant an immediate vet visit.

Should I make my dog vomit?

No — do not induce vomiting unless a vet or the ASPCA Animal Poison Control Center specifically tells you to. The wrong action can make things worse. Call (888) 426-4435 and follow professional advice.

How do I stop this happening again?

Keep bishop's cap cactus well out of reach, or swap it for an ASPCA non-toxic plant — see the best dogs-safe plants list.

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