The Pebbles and Bamm-Bamm Show S01 E09 The Terrible Snorkosaurus

Pebbles overhears that Sea Rock World would pay $1000 for a terrible snorkosaurus, so she and the gang set out to capture one. The snorkosaurus turns out to be not so terrible, so Sea Rock World doesn't want him. Pebbles is forced to hide him in her parents' swimming pool -- forgetting that Fred is planning a pool party for his boss.