Here is one I use. I figure they don't need the sugar. The neighbor's English Sheep dog ‘Max’ climbed up into their cabinets when they were out to get to them. He ate the entire three dozen he’d gotten for Christmas and of course wanted more.
Dog biscuits
3 ½ cups all-purpose flour*
2 cups whole wheat flour
1 cup rye flour
2 cups bulgar (cracked wheat)
½ cup non-fat dry-milk
1 tablespoon salt**
1 package yeast, dissolved in ¼ warm water
1 pint warmed chicken stock
1 egg beaten with 1 tablespoon milk
Mix dry ingredients then add wet, knead for 3 minutes or until it becomes a stiff dough. Roll out, cut (or shape if desired). Bake on sheets in a 300-degree oven for 45 minutes, turn off oven and leave overnight till ‘bone’ dry.
Store in an airtight container.
*Unbleached white works just as well and is better for them.
**You can drop the salt a bit if you want.