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Hydrangea
DANGEROUSHydrangea contains cyanogenic glycosides in its leaves, buds and flowers.
Toxicity Level
5/10Why It's Dangerous
A few mouthfuls of leaves usually only cause GI upset, but larger ingestions can release significant cyanide.
science
The Science
Hydrangin (cyanogenic glycoside)Hydrangea contains hydrangin, a cyanogenic glycoside that releases hydrogen cyanide when chewed and digested. In practice, dogs rarely eat enough to develop cyanide poisoning, but vomiting and diarrhea are common.
Sources
- •Blue Cross UK — Pet Poisoning Guidance
- •ASPCA Animal Poison Control Center
scale
Dosage & Thresholds
Large or repeated ingestions are required to reach cyanide-toxicity thresholds, but GI signs occur with small amounts.
Symptoms to Watch For
warningVomiting
warningDiarrhea
warningLethargy
warningLoss of appetite
warningDifficulty breathing (large doses)
emergency
If your dog has ingested Hydrangea
Contact your veterinarian or an emergency animal poison hotline immediately. Do not induce vomiting unless instructed by a vet.
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