how big are platypus
You have the platypus, a monotreme (an egg-laying mammal) that is indigenous to freshwater rivers and lakes in eastern Australia and Tasmania. Roughly the size of a house cat, the platypus is between 30-60 cm (12-24 in.) in length and weighs 1-2 kg (2-4 lb.). It is covered in thick, dark brown hair over most its body. The thick hair is waterproof and helps keep the platypus warm and dry when in the water, where it spends most of its time.