Toxic Dumple

The Toxic Dumple is another type of aquatic Grub-dog that behaves similarly to the Water Dumple. In Pikmin: Sinister Incinerator, Water Dumples behave as they did in the first Pikmin game, meaning they are fast enemies. Toxic Dumples on the other hand, are slower. With every inch they move, they excrete a short-lasting cloud of poison gas (similarly to the Doodlebug) as they advance towards their prey. Because they are usually found in water, the gas they emit will be a problem for your Blue Pikmin if they want to defeat this enemy. Creatures like these are sometimes better off being punched by Captains instead.

Pikmin: Global Breakdown
In Pikmin: Global Breakdown, these enemies have adapted to the harsh breakdown by becoming twice as fast as the Pikmin: Sinister Incinerator kind and it just leaves a trail of poison that only disappears after defeat.

PikSpore
PS undefined In Pikspore, Toxic Dumples act just like their Pikmin: Sinister Incinerator counterparts.

Pikmin: The After Years
In Pikmin: The After Years, they act like identically to Water Dumples except they leave a trail of poison.