I recently baked some fun cookies in the shape of hot dogs. When I gave them to a friend, she suggested that we could make something similar for dogs and sell them in her (very dog-oriented) community. Does anyone know any good recipes for dog biscuits, preferably something that can be shaped or used with cookie cutters? And are food colorings and decorator gels healthy for dogs? What ingredients should I avoid?

http://frugalliving.about.com/cs/petsanimals/a/bldogfood.htm
my dogs love these and avoid sugar