The diagram illustrates the developmental phases that a frog undergoes throughout its life.
Overall, a frog progresses through eight stages, beginning with adult frogs mating and laying eggs in the water, from which tadpoles emerge. Tadpoles go through three stages before maturing into froglets, which eventually develop into adult frogs, thereby restarting the life cycle.
Initially, adult frogs mate, after which the female lays eggs in the water, referred to as frogspawn. Within seven to ten days, tadpoles hatch from the eggs; they can swim and consume algae for sustenance. Six weeks later, the tadpole grows and develops hind legs. This developmental process continues, and nine weeks later, it develops front legs as well. At this point, its head and body become more defined.
Twelve weeks after transitioning from the tadpole stage, it becomes a froglet that resembles a small frog. However, it still retains a tail, albeit shorter than that of a tadpole. At this stage, it also begins to develop the ability to breathe air, enabling it to leave the water. Gradually, the froglet matures into a young frog eventually four years later, it becomes an adult frog, ready to initiate the life cycle anew.