Turkey Skin – On its own, turkey skin can be fatty and hard to digest, but on Thanksgiving it’s particularly bad (just think of the butter, oils and spices rubbed into it). If you must share the turkey with your dog, do peel the skin off and cut the meat up into bite-sized pieces. And consider choosing the white meat over the dark for your pooch – it’s a little blander and easier to digest.
Cooked Bones - Whether your bird is duck, goose or turkey, do not give the bones to your dog. Any dog cartoon features Fido carrying a bone around in his mouth, but the reality is that a cooked bone is often brittle and sharp pieces can get lodged in your pet’s intestine. And bird bones are hollow and break easily.
Gravy/Buttery Side Dishes - This one goes hand-in-hand with the turkey skin. Fatty foods and trimmings can cause pancreatitis in dogs at worst and diarrhea or vomiting at “best.” ThePoop.com suggests substituting gravy with a little turkey broth if you really want to give your pup a treat.
This is from a list released by dogster before Thanksgiving.Foods too high in fat can cause stomach upset and acute pancreatitis.