What could have caused a frogs stomach to burst?
This is often caused by herons or other predatory birds snaring the frogs and removing the internal organs to get to the “good stuff.” It looks like their stomachs have exploded, but it actually occurred after they were dead. As for your fish, if you have noticed the bloat and then death, this is usually dropsy, which is not actually a disease but a symptom. It usually indicates some disease, poisoning, or pollution that causes their internal organs to fail, and the bloating is a result of kidney failure causing huge amounts of water and toxins to build up in the belly.
