A panoramic look at what makes a mammal a mammal (hair, mammary glands, warm-blooded) and why; including some unusual mammals: monotremes (egg-laying mammals); aquatic mammals (dolphins, whales, manatees); and what mammals have in common with other types of animals (fish, birds, reptiles, amphibians, invertebrates).

Originally released by Bellum Entertainment/Midori Entertainment, 2008. Streaming video file encoded with permission for digital streaming by Infobase on May 06, 2015.

Mammal Traits 1 (7:37); --Mammal Traits 2 (6:27); -- Mammal Traits 3 (3:41); -- Interesting Facts (2:17); .