Boo-Boo is a shorter anthropomorphic bear who wears a blue bowtie.

Boo-Boo is Yogi Bear's constant companion (not his son, as sometimes believed), and often acts as his conscience.

It is not readily apparent whether Boo-Boo is a juvenile bear with a precocious intellect, or simply an adult bear who is short of stature.

[18] Since then, Boo-Boo has remained at Yogi's side through almost all of the Hanna-Barbera series, movies, and specials in which Yogi appeared, the only exceptions being Yogi's Space Race and Galaxy Goof-Ups, in which Boo-Boo's place was taken by a new character named Scare Bear.

In the Yogi Bear film, the character is voiced by singer/actor Justin Timberlake.