Preheat oven to 350 convection.
Add 1/2 of a 14 oz can of pumpkin to 4 egg white, 1/4 cup water, 3 T peanut butter, 1/2 t salt and 1/2 t cinnamon. Turn on the mixer and combine until well mixed. I used the dough hook and it took a couple of minutes. Now slowly add 3 cups of whole wheat flour with the mixer on 2. You will need to add a little more water to get all the flour incorporated. For me it was another 1/4 cup. Again this is a very dry dough.
Place the dough on a cutting surface, cut into 4 equal pieces. Roll into logs of 1 inch diameter. Cut into 1/2 inch pieces. I got 61 bones.
Prep 2 large cookie sheets with parchment paper and distribute the biscuits evenly. Bake for 30 minutes for semi hard.
December 7 2013