Monotremes have a number of unusual characteristics in addition to laying eggs. They have a cloaca, which is a common opening for the digestive, urinary, and reproductive systems. Monotremes also have a pouch, which is where they store their eggs and young. Monotremes are also covered in fur, and they have a beak or snout.
Monotremes are semi-aquatic, meaning that they spend part of their time in water and part of their time on land. They are excellent swimmers, and they use their webbed feet to propel themselves through the water. Monotremes are also good diggers, and they use their strong claws to dig burrows in the ground.
Monotremes are insectivores, meaning that they eat insects. They use their long, sticky tongues to catch insects. Monotremes are also nocturnal, meaning that they are active at night.
Monotremes are an important part of the Australian ecosystem. They help to control the population of insects, and they are a food source for other animals. Monotremes are also a popular tourist attraction, and they are a symbol of Australia.