I will say that my pup in his faster growing stages looked very rangy (could see all ribs) and was eating around 6 cups of day. Each cup had 450 calories. He consumed A LOT of calories. Right now at a year, he still eats around 5 cups a day. Some dogs just require more to maintain their body weight.
Xan Varik von Fernheim (born 4/3/13)