Chicken
There are four basic phases to the chicken life cycle.
Phase 1: Embryo. The embryo phase starts the moment the egg gets laid.
Phase 2: Chick. The chick phase starts on day 21 when the chick hatches.
Phase 3: Pullet (Adolescent)
Phase 4: Adult.
Lizard
Lying and Hatching of Eggs: The life cycle begins with the lizard hatching from an egg, as some species give birth to young ones but in case of lizards they have to undergo a metamorphosis process for further development. ... An Adult Stage: When lizards are fully developed they further undergo the mating process.
frog
The Frog Life Cycle
Frogs are a type of amphibian, so they start off as eggs and go through four stages in their life cycle, becoming five different things in the process: eggs, tadpoles, tadpoles with legs, froglets, and adult frogs.
