|Environment||Temperate or tropical rivers|
Source: Animal Archive, pg(s). 30
Platypuses are egg-laying mammalian monotremes with sleek brown fur, a duck's bill and webbed feet, and short legs. Its hind feet bear sharp, poisonous spurs. Most are about 18 inches long and weigh 3½ pounds.
When underwater, a platypus can sense the electrical impulses that living creatures use to move their muscles, a sense known as electrolocation. They are better swimmers than runners and can hold their breath for up to 5 minutes.
- Wikipedia:Platypus (real-life animal)