[matese]

I would try the boiled boneless chicken cutlets and rice, most all dogs cannot resist chicken, just to get him to eat something, I would not recommend this as a steady diet as there is not much nutrients in rice. If you are feeding kibble try sprinkling a little grated Parmesan cheese on top of it, the smell usually gets their taste buds going. You can also try to moisten the kibble with a little water, or UNSALTED NO ONION added canned chicken broth, this will soften the food the chicken will add yummy flavor to the food. As lillymae suggested he may have problems with teeth causing him pain. Yorkies are notorious picky eaters. Pet Supplies, Pet Smart and PetCo usually have small sample bags of kibble, you can get several varieties and see which one he likes. As bad as a dog may have been treated his loyalty is ALWAYS with his owner, that was the only life he knew, he could be missing that owner another reason he is not eating well. I would not worry about no reaction to a cat or squirrel, this little guy is going through so many adjustments, he is confused, scared, WHO ARE YOU and WHERE IS MY MOMMA or DADDY. If his coat is dirty and matted this is also making him uncomfortable to. Good that you are taking him to the vet today.