Frog is an amphibian mostly characterized by long hind legs, a short body, webbed digits, protruding eyes and the absence of a tail. Most frogs have a semi-aquatic lifestyle, but move easily on land by jumping or climbing. They typically lay their eggs in puddles, ponds or lakes; and their larvae, called tadpoles, have gills and develop in water. Adult frogs follow a carnivorous diet, mostly of arthropods, annelids and gastropods. Frogs range in size from 10 mm to 300mm. The skin hangs loosely on the body because of the lack of loose connective tissue. Skin texture varies: it can be smooth, warty or folded. Frogs have three eyelid membranes: one is transparent to protect the eyes underwater, and two vary from translucent to opaque. Frogs have a tympanum on each side of the head, which is involved in hearing and, in some species, is covered by skin.

Facts about Frogs

1. The biggest frog in the world, the Goliath frog, is also the best high-jumper. It can leap 3 metres into the air. In America, competitions are held to find the best long-jumping frogs.
2. Frogs start their lives as 'eggs' often laid in or near fresh water. Frogs live on all continents except Antarctica. Frogs belong to a group of animals called amphibians.
3. There are 6 to 14 frogs species in the world that have no tongues. One of these is the African dwarf frog.
4. A frog named Santjie, who was in a frog derby in South Africa jumped 13 feet 5.5 inches.
5. The longest life span of a frog was 40 years.
6. Some South American frogs have poison in their skin, although the poison is not always deadly. They are known as arrow-poison frogs because Indian hunters use the poison to tip their arrows.
7. This water-holding frog lives in the desert. When it rains, the frog absorbs water through its skin. Then it burrows into the sand, where it can stay for over two years until the next rainfall.Frogs have strong back legs for jumping.
8. The fire-bellied toad turns on its back when it is alarmed to display its bright belly. This sudden show of color is often enough to startle its enemy. It is also a warning that the toad's skin is poisonous.
9. The flying frog uses flaps of skin between its toes to glide. 

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