My little guy seems to be starving all the time and he eats his dinner so fast everynite, he sometimes eats so fast he vomits and then tries to eat that (Yuk) back up!, he's also continuesly thirsty, I can fill a 4 L icecream bucket up(almost full) and it's 1/2 gone in 2 days, 30% of the time he vomits the water up,especially after a walk or after eating, he does pee alot especially on walks, can't pass a tree or post without a pee on it. His stomach seems quite bloated after he drinks. Is he just a gluten? or is it a sign of something like diabetes? I'm a bit worried for him, but my husband says he's just a fast energy burnining unit that needs to refuel alot. Should I be concerned?