Boo Boo tries to keep Yogi from stealing the picnic basket but it never works. He first appeared along with Yogi in the "Yogi Bear" segment of The Huckleberry Hound Show in 1958; when Yogi was given his own series in 1961, Boo Boo went with him. He doesn't mind eating what Yogi finds but he still doesn't like knowing that Yogi steals it. Boo Boo was originally voiced by Don Messick who also portrayed Ranger Smith.