Nuranuru

The Nuranuru are gastropod creatures found in swamp environs, primarily the Misery Mire in A Link to the Past. These slugs have adapted the strange ability to lay bomb-like explosives that can damage nearby intruders and prey. Their bomb-laying method is similar to the Puff Bomber, quick and unsuspecting, with no knowledge whatsoever of how explosives can be contained in a biological creature. They are however, vulnerable to their own bombs, and so can be killed by the very weapon they create.

Trivia
An early beta version of Twilight Princess included what appears to have been a Nuranuru or a Sluggula, however this enemy was never included in the final version of the game. It may have been replaced by the Torch Slug.