Whale is the common name for a widely distributed and diverse group of fully aquatic placental marine mammals. They are an informal grouping within the infraorder Cetacea, usually excluding dolphins and porpoises. Whales, dolphins and porpoises belong to the order Cetartiodactyla with even-toed ungulates and their closest living relatives are the hippopotamuses, having diverged about 40 million years ago. The two parvorders of whales, baleen whales (Mysticeti) and toothed whales (Odontoceti), are thought to have split apart around 34 million years ago. The whales comprise eight extant families: Balaenopteridae (the rorquals), Balaenidae (right whales), Cetotheriidae (the pygmy right whale),
The Vampire Bat is a small species of Bat, native to the tropics of Central and South America. There are three recognised sub-species of Vampire Bat, all of which are in a genus of their own despite their obvious similarities. The Common Vampire Bat, the Hairy-Legged Vampire Bat and the White-Winged Vampire Bat are all closely related and share the same unique feeding habits, as they are the only known mammals that feed entirely on blood. Over time, Vampire Bats have perfectly adapted to the consumption of their only food source, with a leaf-like heat sensor on the end of their nose which detects where the warm blood is flowing closest to the skin.
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The burrowing frog is a large sized species of frog that is natively found in Australia. Burrowing frogs are most commonly found in their burrows in river banks and close to marshes, streams and lakes.
There are six different species of burrowing frog in Australia which vary in size from around 6cm to 10cm long. Only one of the six species of burrowing frog is found in south-eastern Australia, as the other five burrowing frog species are all found in western Australia.
The burrowing frog has a very distinctive appearance and is easily identified by its large, bulging eyes, short body and long legs and toes. Unlike many other species of frog, the toes of the burrowing frog are not