The platypus is a unique, semi-aquatic mammal found only in Australia. It's known for its duck-like bill, beaver-like tail, and otter-like feet. The platypus is one of the few venomous mammals, with males possessing a spur on their hind feet that delivers venom. Furthermore, the platypus is one of the only two mammals that lay eggs, along with the echidna. 

Here's a more detailed look at the platypus:

Physical Characteristics:

Appearance:

The platypus has a sleek, furry body, a flat tail, and webbed feet, giving it a unique blend of features from various aquatic creatures. 

Size:

Platypuses typically range from 15 to 24 inches in length, including their tail. 

Bill:

Their bill is soft and sensitive, covered with thousands of receptors that help them detect prey underwater. 

Venom:

Male platypuses have a venomous spur on their hind foot, which they use to fight during mating season. 

Habitat and Behavior:

Location:

Platypuses inhabit freshwater rivers, lakes, and creeks in eastern Australia, including Tasmania. 

Lifestyle:

They are mostly active at night and during dusk, spending much of their time underwater hunting for food. 

Diet:

Platypuses are carnivores, feeding on insects, larvae, shellfish, and worms, which they gather from the bottom of the water with their bill. 

Reproduction:

Egg-laying: Platypuses are one of the few mammals that lay eggs, with females typically producing one or two eggs per clutch. 

Incubation: The female platypus keeps the eggs warm by holding them between her body and tail until they hatch. 

Puggles: Baby platypuses are often called puggles.