1x13 - The Pebbles and Bamm-Bamm Show

Pebbles' pet elephant Wooly is able to fly after bathing in Moonrock's Super Shampoo. After winning a pet talent contest, Wooly gets an overblown ego and causes Fred to blow up at him and hurt his feelings. Wooly runs away to join the circus, and the kids have to find a way to rescue him before the shampoo wears off.