Most reptiles need long grass, rocks, dead trees and logs. In cooler areas, they hibernate during winter beneath fallen timber or other debris as shelter against frost and cold. About 50 species are 'tree frogs' which are commonly green or partly green. They spend a lot of time in moist ground litter or in trees. Other frogs, including some north Queensland species, live entirely in the rainforest canopy.
Frogs play an important role in insect control.
The tadpoles graze on algae, while most adult frogs feed mainly on insects, insect larvae and other small animals. Frogs are acutely sensitive to changes in their environment, and serve as indicators of the health of aquatic and terrestrial ecosystems. Deformities and declining numbers of frogs can result from pollution, especially from fertilisers and pesticides. Most frogs need water to release their eggs into. This can range from a puddle, to a creek or dam.