One of my ( 2) dogs just can't seem to gain any weight. He's not skinny, just very lean. He stays between 53 & 55 pounds. We feed about 3,000 calories (8 cups) Eukanuba Premium performance chow, plus treats. This is basically double what my other dog eats. What are the risks of feeding high protein diet? We tried all meat dog food ( EVO), but he didn't seem to want to eat as much, and it really gave him the runs (tried for several months), and that stuff is crazy expensive, too. My vet isn't too concerned with his weight, but without any fat, I know he is prone to getting cold on later season hunts. What do y'all recommend?