The Littl' Bits - Season 1 Episode 19 The Strange Egg
Overview: While out having a picnic one day Lillibit, Willibit, and Snagglebit come across an egg floating in the river. They take the egg back to the village and Willibit shows it to his parents and asks if he can keep it. Fearing that there might be a monster inside his father tells him no and that they should take the egg away from the village.