What is a mammal? A look at three orders of this class of animal shows how certain characteristics allow them to be grouped together. Ungulates -- It's an ugly word for hoofed mammals. Learn what keeps these horses, hippos, and camels together in this seemingly disparate group. Proboscidea -- Watch how the only two species in this order--the African and Indian elephants--put their elongated noses (proboscises) and tusks to good use. Cetaceans -- Learn how the only water mammals manage such incredible tasks as giving birth to live young under water.
Only available in the US.
