are hydrangeas poisonous to dogs

Hydrangeas are poisonous to dogs. They contain a toxic compound called amygdalin, a cyanogenic glycoside, which can cause mild digestive upset such as vomiting, diarrhea, and lethargy if ingested. In rare cases, especially if a large amount is consumed, hydrangeas can cause cyanide poisoning, which is more serious and requires immediate veterinary attention. All parts of the hydrangea plant—leaves, flowers, buds, and stems—are toxic. If a dog has eaten any part of a hydrangea, it is important to contact a veterinarian promptly. Preventing dogs from chewing or eating hydrangeas is best done by keeping these plants out of reach or training dogs to avoid them. Symptoms to watch for include vomiting, diarrhea, lethargy, and signs of cyanide poisoning such as difficulty breathing. Quick response to ingestion can help ensure a full recovery. For safety, consider avoiding hydrangeas in gardens where dogs have access or provide safe play areas away from toxic plants.