The frog is an amphibian, it include in the order Anura. Usually frog walk by the jump. The name frog derives from Old English frogga. There are more than 5,000 species of frog.Most frogs have long hind legs, a short body, webbed digits, protruding eyes and the absence of a tail. Most frogs have a semi-aquatic lifestyle, it can move easily on land by jumping or climbing. They typically lay their eggs in puddles, ponds or lakes, and their larvae is gills in water. Adult frogs follow a carnivorous diet, mostly of arthropods, annelids and gastropods. Frogs are most noticeable by their call, which can be widely heard during the night or day.The distribution of frogs ranges from tropic to subarctic regions, but most species are found in tropical rainforests. There are more than 5,000 species described, they are among the most diverse groups of vertebrates. The frog populations of certain frog species are significantly declining.