Hello. Thanks for writing in. Sorry to hear that Baby is having problems. You cannot give a dog Percocet. It has acetaminophen, which is very toxic to dogs and can cause severe liver failure. Your best option is to talk to your vet about getting some pain medications that are more safe for dogs, such as Rimadyl, Deramaxx, Metacam and Tramadol. Please let me know if you have any other questions. Hope this helps.