Monotremata is a unique group of egg-laying mammals that includes species like the platypus and the echidna. Unlike most mammals that give birth to live young, monotremes reproduce by laying eggs. They are primarily found in Australia and New Guinea, showcasing a fascinating blend of mammalian and reptilian traits. These animals have distinct features, such as a leathery beak or snout and the ability to produce milk for their young. Monotremes are warm-blooded and have fur, but their egg-laying sets them apart from other mammals. Their unusual characteristics make them a subject of interest for scientists studying evolution and biodiversity.