Why does my puppy have a big belly?
Many puppies get fat little bellies simply from eating too much. Not too much as in too many calories but too much for their bellies. Puppies are born with tiny bellies and a hunger and need for lots of calories to grow quickly. A healthy mom can give them all they need but their bellies look silly full between feedings.A constant belly swelling isn't always good however. When a puppy has worms the belly will also swell. If the dogs are outside, the mom has worms or you even you have doubts take a fecal sample up to the vet. It is usually very inexpensive. I know some people automatically worm but I am not comfortable with it myself.