Preheat Oven Bake at 375°F (190°C)
Combine wheat flour, bread flour, wheat germ, salt, and brown sugar, and flax seed in mixing bowl. Stir in eggs and vegetable oil. Dissolve dry milk in water then incorporate the mixture. Mix to form a very firm dough that is smooth and workable. Adjust by adding a little extra flour or water as required. Cover the dough and set aside to relax for 15-20 min. Roll the dough out to 1/2? (1.2cm) thick. Cut out biscuits using a bone-shaped cutter 3?x1.5? (7.5×3.7cm). Place the biscuits on cookie sheets lined with parchment (or you can bake on greased cookie sheets). Bake the treats for approximately 40 minutes or until brown and hard. Let treats cool, then store in a tightly-sealed container.