American Museum of Natural History
American Museum of Natural History: Ology: Moving Mammals
Students explore the different ways mammals move by observing them walk, hop, gallop, swim and swing in animations. Facts about habitat and structure are also included in these animations.
Earth Life
Earth Life: Mammalian Skeleton
A very good overview of the structure and function of the mammalian skelton. Includes a nice graphic of an elephant skeleton which serves as a typical (though big) example.
Other
Ladywildlife's How Mammals Move
Discusses the different ways mammals move. Also presents some key facts about some unique mammals and how they move.
CK-12 Foundation
Ck 12: Biology: Mammal Living and Locomotion
[Free Registration/Login may be required to access all resource tools.] Covers social living and locomotion in mammals.
Earth Life
Earth Life: Locomotion of Mammals
Good site for some general information on the movement of mammals. Gives a description and gives the average speed of a variety of animals.