Is Old Man Cactus toxic to cats & dogs?
Cephalocereus senilis
Our records list Old Man Cactus as non-toxic to cats and dogs.
Matched to its entry on the ASPCA's published list on September 9, 2026. Listed as non-toxic to dogs and cats; the sharp spines concealed under the wool are the real risk to pets.
Questions pet owners ask
Is Old Man Cactus toxic to cats?
Old Man Cactus (Cephalocereus senilis) is recorded as non-toxic to cats in our plant records. Listed as non-toxic to dogs and cats; the sharp spines concealed under the wool are the real risk to pets. Those are our own records, compiled by following the ASPCA's published toxic and non-toxic plant lists and Pet Poison Helpline's plant poison list rather than copied from them — confirm anything that matters against the ASPCA's published lists, which this one is matched to, or with your vet.
Is Old Man Cactus toxic to dogs?
Old Man Cactus is recorded as non-toxic to dogs in our plant records. Those are our own records, compiled by following the ASPCA's published toxic and non-toxic plant lists and Pet Poison Helpline's plant poison list rather than copied from them — confirm anything that matters against the ASPCA's published lists, which this one is matched to, or with your vet.
What should I do if my pet eats Old Man Cactus?
Even a plant recorded as non-toxic can upset a stomach if it's eaten. If your pet seems unwell, contact your vet. No plant list is a safety guarantee.
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Those are our own records, compiled by following the ASPCA's published toxic and non-toxic plant lists and Pet Poison Helpline's plant poison list rather than copied from them — confirm anything that matters against the ASPCA's published lists, which this one is matched to, or with your vet. This information is educational and not a substitute for veterinary advice. If your pet has ingested a plant, contact your vet or the ASPCA Animal Poison Control Center at (888) 426-4435.