The story of the Easter Bunny is thought to have become common in the 19th Century. Rabbits usually give birth to a big litter of babies (called kittens), so they became a symbol of new life. Legend has it that the Easter Bunny lays, decorates and hides eggs as they are also a symbol of new life. It doesn't do all the work alone though. In Switzerland, Easter eggs are delivered by a cuckoo, and by a fox in parts of Germany.