Bokermannohyla alvarengaiBokermannohyla alvarengai is a species of frogs in the family Hylidae.Distribution and statusIt is endemic to Brazil. Its natural habitats are subtropical or tropical high-altitude grassland, rivers, and rocky areas. It is threatened by habitat loss.Temperature regulationBokermannohyla alvarengai is able to lighten its skin colour when hot, making the skin reflect more heat and so avoid overheating.