Another fully illustrated, fact-packed Pocket File. Did you know that...There are more than 4,000 species of frog in the world. Australia has 214 known frog species, and we will probably find more. The world's largest tree frog is Australian. A typical frog spends most of its life in the forest, not near water. Some Australian frogs do not breed in water, and never go near water. Most of our frogs only occur in Australia. In a number of our frog species the males care for the eggs. Desert frogs may live in a cocoon underground for years and only emerge after heavy rain. The chemicals in skin secretions of the common Green Tree Frog are being investigated for medicinal use. Frogs do NOT give you warts. Frogs do NOT turn into princes when kissed.