Includes overview, Sonoran Desert species, distinguishing features, habitat, feeding and life history.

Provides information on members, habitat, characteristics, specimens, sounds and classification. With photos and links.

Teaches about how mammal brains are different and the same, including evolution, development, and function.

Article provides characteristics of all mammals, classification, and additional indicators.

Explains what mammals are, how they are different and alike, where they live, what they eat, and the range of sizes.

Provides information on numbers, members and characteristics. With photos, links and online references.

Tells what makes an animal a mammal, including pictures and different species.

Furnishes fact sheets and information about mammals of the British Isles.

Provides descriptions, pictures, and sounds of various species.

Features anatomy, reproduction, classification, history, and distribution.