I noticed last night as Jaxon was going up the stairs in front of me to go to bed that his belly seemed dipped in more than what I think should be. Different ways he moves make him look thin and other times he looks fine. I noticed tonight that when I fed him his evening meal his belly was again extremely dipped in. My grandmother was at my home, so I mentioned it to her and she agreed. Jaxon is eating very regularly and doesn't show a lack of energy. He's also a 14 week old puppy so could he just be having a growth spurt and seem awkwardly filled out? He does see his vet this week so I'll make sure with him there is no concern, but has anyone else ever noticed their puppy's belly changing like this? Right now..about 2 hours after he last ate, his belly looks fine.