It is sometimes very difficult for us to imagine that all animals have the same origin. Iguanas to butterflies to monkeys all came from the first cells of our primitive world. In this program, learn about Charles Darwin’s theory of evolution, single-cell protozoa and their characteristics, multi-celled metazoa and their characteristics, and the function, movement, habitats, and structure of different species.

Originally released by Cerebellum Corporation, 2013. Streaming video file encoded with permission for digital streaming by Infobase on July 10, 2018.

Animal Kingdom: Introduction (3:18); --Animal Kingdom Phyla (6:13); -- Animal Kingdom: Summary (1:46); -- Credits: The Animal Kingdom (0:47); .