"I have 3 Dobermans. The black one in the picture is 11/12 yrs old and has not been on Timberwolf all his life but is starting it now. The red one is Razzle. She is one year old and has been on Timberwolf most of her life. Then another black one (I will send you her pic) is 5 months old and has been on Timberwolf all her life. Razzle was my picky eater, but she really likes Timberwolf, so we stuck with it and now all the dogs love it!! We have tried most of the high protein brands, cause two are still puppies. I just put in a new order for Lamb and Apples, Ocean Blue and Wild and Natural, plus the Salmon Oil is good for their coats. They all have done really well on it. I'm pleased."