Beat the cheese and margarine in a mixing bowl. Add the flour, garlic and salt; mix well. Add enough milk to form a stiff dough. Cover and refrigerate for 30 minutes.
Roll out dough to 1/4 inch thickness. Cut with a bone shaped cookie cutter. Place on an ungreased baking sheet. Bake at 375* for 15-20 minutes or until edges are golden brown. My oven takes 15 minutes...all ovens are different. Remove to wire racks to cool. Biscuits will harden as they cool.