San Diego Zoo Global
San Diego Zoo: Kangaroo and Wallaby
This excellent resource from the San Diego Zoo presents extensive information on kangaroos and wallabies including details about their habitat, physical characteristics, size, diet, family life, conservation status, and fun facts.
Australian Museum
Australian Museum: Mammals
Australian Museum Online has a collection of mammals including bats, platypus, and marsupials. Take a peek. Read about the monkey-faced bat, the mountain brushtail possum, and the tree kangaroo.