The platypus (Ornithorhynchus anatinus), with its duck bill and webbed feet, is a unique Australian animal. It and the two species of echidna are the only monotremes or egg-laying mammals to be found on earth.
Platypus are readily identified by their streamlined body, webbed feet, broad tail and characteristic muzzle or bill which is soft and pliable. An adult platypus is from 45 cm to 60 cm in length and may weigh up to 2.7 kg.
Surprisingly, platypus is capable of many vocalisations including a soft growling sound when disturbed. They are strong swimmers they are not fast and prefer slow flowing streams. Platypus lives in burrows that they dig on the banks of fresh water rivers, lakes or streams. They are shy and wary. Typical prey is the larvae of caddisflies, mayflies, two-winged flies and shrimps. Once caught, prey is carried to the surface in cheek-pouches where they are eaten. Adults have no teeth -- instead small, horny pads are used to hold and crush prey.