Toxicity level
MildModerateSevere
- Insoluble oxalates
- Immediate
- Affects: Mouth & throat
Did you know? 'Dumb cane' — chewing causes intense mouth burning and drooling.
Verdict
Feed only in moderation
Key concern
Insoluble calcium oxalates
Species
🐶 Dogs
Why this verdict for dogs
Dieffenbachia (dumb cane) has oxalate crystals so irritating they can make the mouth and tongue swell, along with drooling and vomiting.
Warning signs to watch for
- Mouth or tongue swelling
- Drooling
- Vomiting
🍽️ Feeding it safely?
Frequently asked questions
Can dogs eat dieffenbachia (dumb cane)?
In moderation. Dieffenbachia (dumb cane) has oxalate crystals so irritating they can make the mouth and tongue swell, along with drooling and vomiting.
How much dieffenbachia (dumb cane) can dogs have?
None — dieffenbachia (dumb cane) is not safe for dogs and should be avoided entirely. When in doubt, ask your vet.
Is dieffenbachia (dumb cane) safe for cats too?
Verdicts can differ between species. See the cat answer for dieffenbachia (dumb cane) →
More plants for dogs
By the CanMyPet Editorial Team · Reviewed against ASPCA Animal Poison Control, the American Kennel Club (AKC) and Pet Poison Helpline · Last updated June 22, 2026.
Sources
- ASPCA — People Foods to Avoid Feeding Your Pets
- American Kennel Club — Dog Nutrition
- Pet Poison Helpline — Poison List
CanMyPet provides general information reviewed against trusted sources (ASPCA, AKC, Pet Poison Helpline). It is not a substitute for professional veterinary advice. When in doubt, always contact your veterinarian.