I have a year and a half basenji , when I got him at 8wks he was very petite ,he goes to the vet often, and she can't find anything wrong with him, but he almost looks emaciated, is that normal for a very, very active basenji. He has a bowl of food available all the time, and he eats it. He always seems hungry for treats of any kind. I am not sure what to do . He also has something the vet says she never saw before, it is an elongated dry red spot on his tummy in the area of his naval. It gets lighter and then darker switching back and forth. If someone has ever encountered these problems I would appreciate some feedback thanks so much.