S5·E20 Caillou's Clay Play

Caillou and Leo accidentally break Rosies clay poodle while playing. Instead of telling the truth, they try to make another clay poodle for Rosie... but end up with a few misshapen oddities e.g. a lionoodle and an elephantoodle. When Caillou and Leo finally confess, it turns out Rosie is equally happy with her new and unique clay creatures.