Canidae Natural Pet Food Company offers two large breed dog food formulas as part of its Life Stages line of natural pet foods. The new formulas are made with duck, brown rice and healthy lentils providing dog owners with a protein alternative for their large breed pets. One formula is specific to large breed adults, the other to large breed puppies. Canidae’s new large breed formulas with duck, brown rice and lentils will both be available in 15-lb. and 30-lb. bags as well as 13-oz. cans.