Mother Duck finds an egg and rolls it home to hatch out along with her other eggs. In due course, the eggs hatch into three ducklings - Quack, Dabble and Fluff, and Snap a baby crocodile.The duck family are very happy together except for the comments of the other animals who think the green wrinkly duckling is rather strange. Mother Duck's answer is always "Some ducklings are different, but to me, they're all wonderful." All the ducklings and Snap grow up together quite happily despite the nasty comments from other creatures, until the day when the tiger comes looking for a tasty meal of tender little duckling. Snap with his sharp teeth saves the day sending the tiger howling back into the forest. Everyone agrees that Snap is wonderful. There is a lovely picture at the end of the story, the Duck family group hug!
With Snap, Damian Harvey and Lucy Richards have created a warm-hearted picture book which doesn't labour the point. This would be a good read one to one, or with a small group, or a whole class depending on circumstances.
Other egg stories you could look at are The Odd Egg by Emily Gravett, Egg Drop by Mini Grey, and of course, The Ugly Duckling by Hans Christian Andersen.