What are animals that lay eggs?

Answer 1

There are many animals that lay eggs. The animals most associated with eggs are birds, of course, but there are others. Most reptiles, fish, insects, crustaceans and other underwater invertebrates lay eggs, though some - such as sharks, some species of chameleons and snakes and the like - have been known to retain the eggs inside their birth chambers until they hatch and thus give live birth. There are also two species of mammal that lay eggs; both are of the order Monotreme. The platypus and the echidna both lay eggs and are the only surviving members of the order Monotreme.