Spunky is Rocko's pet dog. Though not explicitly stated on the show, Spunky closely resembles a Bull Terrier. Spunky emits foul odors, eats trash, drinks his saliva, and rolls in and eats Ed Bighead's salmon bushes, causing Mr. Bighead to feel annoyed. Nickelodeon Southeast Asia's website described his personality as "loving" and "loyal." His barks and other sounds were provided by Carlos Alazraqui.