Preaheat Oven: 350 degrees
Grease or spray cookie sheets

Mix dry ingredients and seeds together.
Combine milk and egg and mix.

Add oil, molasses, and all but 1 tablespoon of egg/milk mixture. Add more milk if needed to make firm dough. Knead a few minutes, let dough rest 1/2 hour or more.

Roll out to 1/2 inch. Cut into shapes and brush with the rest of the egg/milk mixture.

Bake on cookie sheets for about 30 minutes or until lightly browned.  To make biscuits harder, leave them in the oven with the heat turned off for an hour or more.

Storing Dog Treats
In general you should store dog treats the same way you would homemade people cookies.  That being said, there are two main variables that determine storage time - the amount and type of fat in the recipe and your local weather conditions.  If your recipe uses fats such as butter, or meat bits or juices then it will be more prone to rancidity than a recipe that uses some vegetable oil or shortening.  Your treats may mold or spoil much faster in humid or very hot climates. 

Refrigeration and Freezing -  Refrigeration will prolong the life of more fragile dog treats. Make sure to store in a tightly sealed container or zip lock bag.  You can also freeze most treats in zip lock freezer bags.  Allow to thaw completely before use.