 The fauna of The Glen Nature Reserve is well studied, and includes a large biodiversity.There are 14 species of frog, over 70 species of bird, over 20 species of mammal and 18 species of reptile, found in the nature reserve, with more species expected to be found.There are many endangered species of animal within the nature reserve, including the koala ("Phascolarctos cinereus") and the yellow-bellied glider ("Petaurus australis").