There are eleven species of frog that can be found in Tasmania. Some of the Tasmanian frogs that you are more likely to see in the central highlands area are the Brown Tree Frog, Common Froglet and Tasmanian Froglet. The Brown Tree Frog (Litoria ewingi) is a common species that is also found on mainland Australia. They are often found in water or under logs and rocks at altitudes of at least 1070 metres. As the name suggests they are excellent climbers with discs on fingers and toes for tree climbing. They are a dark brown to grey brown colour with a darker stripe down the back and a white underbelly. The females are larger than males at around 4.5 cm while the males reach around 3.7 cm. Like most frogs, the females lay clusters of hundreds of eggs from which tadpoles hatch. After spending up to seven months as tadpoles they metamorphose into frogs. The call of the Brown Tree Frog is often heard at night following rain. The Common Froglet (Crinia signifera) is found throughout most of Tasmania and some parts of the mainland. Their habitat can be wet and dry forests, woodlands, floodplains, sedge lands and alpine grasslands. Within these habitats they shelter beneath rocks, vegetation and leaf litter near ponds and swamps. The patterning on their backs ranges from light to dark brown, sometimes with darker stripes down the back. Adults reach a size of up to 3 cm long. The Common Froglet breeds throughout most of the year and the female lays over 100 eggs scattered around the bottoms of ponds and still bodies of water which hatch after 7-10 days. The Tasmanian Froglet (Crinia tasmaniensis) is endemic to Tasmania. It is often found at high altitudes such as on the Central Plateau in forests, button grass plains, sedge lands and wetlands. They can always be found near water. Their skin has a dark brown and light brown pattern with a black and white underbelly and red inner thighs and groin. They breed in spring to summer and the tadpoles take around four months to metamorphose into frogs. There is some concern that the Tasmanian Froglet is susceptible to the chytrid infection that has been found in some areas of Tasmania and the distribution of the Tasmanian Froglet has been shrinking as a result.