Frogs have started their life as tadpoles for almost 200 million years. Watch their transformation from tadpoles to full-grown frogs. | National Geographic UK

The life cycle Tadpole development This process varies according to the species and even the environment in which the animal is found, and can last between two and four years. And once the tadpole matures, the thyroid gland goes into action by producing a hormone that activates growth. #cycle #ciclos #estagio #stages #week #desenvolvimento #frog #sapos #aquarist #cachoeira #natureza #nature #cachoeirinha | Natural Fish Aquarium

Watch this beautiful time-lapse video of a tadpole's growth to frog. The process of transformation by which animals undergo extreme and rapid physical changes sometime after birth is called metamorphosis. (Video: victorharold/Instagram) #LearningNeverStops #MondayThoughts #AnimalVideo #Nature | India Today