Sluggula

Sluggulas, formerly known as Bomb Slugs, are yellow slug enemies that appear in a few The Legend of Zelda games. They first appear in The Legend of Zelda: A Link to the Past. Sluggulas have a fat body with a pointed back end, two eye stalks and a protruding mouth at the front. Depending on the game, Sluggulas have either two blue stripes or several purple dots on their back.

The Legend of Zelda: A Link to Past
In The Legend of Zelda: A Link to Past, Bomb Slugs only appear in the sixth and eighth dungeons, Misery Mire and Turtle Rock respectively. Bomb Slugs leave a trail of green bombs behind as they move around. They are unaffected by their own bombs and ones dropped by Link. Despite being slugs, they move around quickly. Bomb Slugs can be defeated if Link strikes them twice with his Master Sword, although one strike from the Tempered Sword or Golden Sword can instantly defeat a Bomb Slug. If Link touches a Bomb Slug, he takes four hearts of damage, although their bombs only do one heart of damage.

The Legend of Zelda: The Minish Cap
In The Legend of Zelda: The Minish Cap, Sluggulas are much weaker and have been reduced to Minish size. Link encounters them in Deepwood Shrine and the Temple of Droplets. Sluggulas act more like regular slugs than in their first appearance, because they do not drop bombs and move very slowly while leaving behind a trail of slime. If Link touches a Sluggula, he takes quarter of a heart in damage.

In some areas, including a few where Link has to cross the water on a lily pad, Sluggulas drop from the ceiling when Link passes under them. Their fall is indicated by their shadow, just like Wallmasters. Sluggulas always fall upside-down and land on their back. If a Sluggula hits the ground, it wiggles on its back, with its gray belly exposed, for a few seconds before turning upright. Sluggulas cannot swim, so if they drop into the water, they drown. Link can defeat a Sluggula by slashing it twice with the Smith's Sword, or once if the Sluggula's underbelly is exposed.

The Legend of Zelda: A Link Between Worlds
In The Legend of Zelda: A Link Between Worlds, Sluggulas are extremely rare enemies. There is only one in Thieves' Hideout, and some more are found in a dark room of the Treacherous Tower, making it possible to defeat them without even seeing them. Sluggulas retain their behavior and physical appearance from The Legend of Zelda: A Link to the Past, though they now clearly produce the bombs from a hole in their backsides.