Gross!

Exploding Toads in Germany:

Based on the wounds, Mutschmann said, it appears that a bird pecks into the toad with its beak between the amphibian's chest and abdominal cavity, and the toad puffs itself up as a natural defense mechanism.

But, because the liver is missing and there's a hole in the toad's body, the blood vessels and lungs burst and the other organs ooze out, he said.
...

Local environmental workers in Hamburg have described it as a scene out of a horror or science fiction movie, with the bloated frogs agonizing and twitching for several minutes, inflating like a balloon before suddenly bursting.

"It's horrible," biologist Heidi Mayerhoefer was quoted as telling the Hamburger Morgenpost daily.

"The toads burst, the entrails slide out. But the animal isn't immediately dead -- they keep struggling for several minutes."

I'm not sure, but isn't that a scene from that Revelations miniseries?