Squiggler

A Squiggler is a miniature Wiggler that appears in New Super Mario Bros.

With three body segments and a head about twice the size as the other segments with a sprout on it's head, this tiny Wiggler crawls around the perimeter of pipes. Squigglers are only seen in World 7-A and are obviously small versions of the Wigglers. When they appear in Mario & Luigi: Bowser's Inside Story, the player finds them in the farm.