I checked on my big frog yesterday, and he was completely inflated like a balloon. It looked like i could poke him with a pin and he'd burst, he was so blown up with air. So I put him in the water and he deflated, and then I fed him a fish but after just one fish he hopped back into the substrate. So I didn't think much of it, but today I checked on him again and he was yet again inflated he looked like he was about to pop. Is this normal, or would this be classified as 'bloat'. He has never acted like what I would expect of a typical pacman since I got him a week ago. Is he sick, and what is the cause of this sickness???