This graphic from Evolution, traces the evolution of whales from land-dwelling mammals to the aquatic creatures we know today. A PDF is included that diagrams the evolutionary process that is believed to have taken place.

Read about the African animals that hold the record for the longest land migration by a group of mammals.

This resource offers a detailed overview of the taiga biome, including its locations, the types of plants and animals that live there, and other interesting facts.

Uncover discoveries from the past by learning about the prehistoric giant short-faced bear. Includes information about the time period, physical characteristics, fossil specimens, feeding habits, and habitat.

Uncover discoveries from the past by learning about the prehistoric American mastodon. Includes information about the time period, physical characteristics, fossil specimens, feeding habits, and habitat.

This site provides a general overview of the hippopotamus. Content takes a look at what this animal eats, where it lives, who its predators are, and more. Several audio and video clips are also available.

This resource provides detailed information about hippopotamuses.