Categories: Cookies, Animal 
      Yield: 150 servings 
  
  3 1/2 c  Flour 
      2 c  Whole wheat flour 
      1 c  Rye flour 
      1 c  Cornmeal 
      2 c  Cracked wheat 
      4 ts Salt 
    1/2 c  Dry milk 
      1    Egg 
      1 pk Dry yeast (1 T) 
      1 pt Chicken stock 
  
  Ingredients not generally available may be found at health food stores. 
  Dissolve yeast in 1/4 c warm water. Add chicken stock and pour into dry 
  ingredients. Knead for 3 minutes, working into a stiff dough. Roll dough 
  into a 1/4 in. thick sheet and cut with cookie cutters (cutters shaped like 
  dog biscuits are available). Bake in 300 degree oven for 45 minutes, then 
  turn oven off and leave biscuits in oven overnight. In the morning the 
  biscuits will be bone hard.Note: This dough is extremely stiff to work 
  with, but the end product is excellent. From the Chester County, PA ASPCA 
   
  POSTED BY MICHAEL KEAN, Prodigy ID# VMXV03A