Except If by Jim Averbeck

From chapters.ca:
In the beginning, there is an egg. Which may become a baby bird, except if it becomes a baby snake instead. Except if the baby snake is really truly a dinosaur! In this young, clever, and whimsical picture book in the spirit of Not a Box and First the Egg, an egg is not just an egg, but a symbol of the potential a child's imagination holds. As each image melds smoothly, but unexpectedly, into the next, readers are invited to stretch the limits of their imagination.