I have a Papillon puppy who is the runt of his litter - half the size of his 6 littermates, but he still eats and plays and acts chipper, so it looked like he was going to turn out ok.
But last night before bed I saw that he has a swollen belly... not the entire belly, just one side! It looks awful, and I don't know what to do! I wormed him, and there was some worms on the floor this morning, but he was still swollen. Please help!