Milkflower cotoneaster contains cyanogenic glycosides, posing mild toxicity risk to humans, cats, and dogs through ingestion. Symptoms in humans can include difficulty breathing, dizziness, and nausea, while cats and dogs may experience distress, vomiting, and diarrhea. It is crucial to seek immediate medical or veterinary care if poisoning is suspected to prevent severe complications. All parts of the plant are toxic. handler. Milkflower cotoneasteranzai.