Frogs are amphibians found all over the world except for the poles. There are about 4,800 different species of frogs in the world. There are more than 5,000 different species of frogs found in the world. Most of them inhabit tropical rainforests in the southern hemisphere. Tropical rainforests of South America and parts of Indonesia have quite a few of them. The most typical aspect of a frog is its sticky tongue. It is used by frogs to grab at insects and pull them into the mouth. They have skin that is able to breathe.
Frogs can jump to great heights with the help of their legs that are typically designed for the purpose of jumping and scaling heights. They have webbed feet and hands that compliment them in swimming in water. They are even used by frogs to climb trees, as some species are known to climb trees.
Frogs lay their eggs in water bodies. Tadpoles develop out of the eggs, and eventually grow into adult frogs. Life cycles of frogs are being studied seriously because their numbers are dwindling. Cutting down of forests and rapid climate change are the principal reasons cited for the decline in numbers.
To defend themselves from their predators, some species of frog have developed a poisonous chemical within themselves that serves as a poison for the animal eating it. The poison ranges from mild to tolerable to severe as per different species of frogs. They prove fatal for their predators. Frogs have glandular skin that produces a number of secretions that can prove to be toxic for the predator.