My Shih Tzu is starving itself? PLEASE help me?!?

Get a few samples from the pet store, most have little sample bags of the better foods. See which one it likes and buy that food.Try a can of "Chicken Soup for Dogs" or Merricks' "Grammy's Pot Pie" If it isn't back on schedule eating Monday morning, get it to see the vet. Being "off his feed" is one of the first signs of trouble.