Mammals

Mammals are warm-blooded animals (constant temperature), so they have to be covered with fur or hair to keep them warm. Young puppies are born alive, mostly active, with the exception of the single-stroke order laying eggs such as the anteater and duck-billed platypus. They feed their babies with milk produced from the mother mammary glands. Mammals are the highest phylum in the vertebrates, forming a wide range of species, including mammals living in warm regions such as lions, giraffes and elephants, as well as cold, well-adapted areas such as polar bears and musk. They live either on land, moving from one place to another, dig holes in the earth, or they live in water, such as otters and seals. There is one type of mammals that has the ability to fly, the bat.