milk

Most adult cats and dogs lack lactase and cannot digest lactose properly, causing diarrhea and GI upset. Dairy is also a common source of food allergies causing skin problems.

Other common names: milk powder, lactose, cheese, whey, cream, 牛奶, 乳糖, 奶粉, 乳製品, ミルク, 乳糖, 牛乳

Sources: ASPCA Animal Poison Control Center, FDA Center for Veterinary Medicine, veterinary literature. For reference only, not medical advice. If poisoning is suspected, seek veterinary care immediately.