- Reptiles: All reptiles lay eggs, including snakes, lizards, turtles, and crocodiles.
- Amphibians: Most amphibians lay eggs, including frogs, toads, and salamanders.
- Fish: Many species of fish lay eggs, including salmon, trout, and tuna.
- Insects: Some species of insects lay eggs, including butterflies, moths, and grasshoppers.
- Monotremes: Monotremes are a unique group of mammals that lay eggs. The only living monotremes are the platypus and the echidna.