# What Is a Mammal?

With teacher's guide

Uses a detailed comparison of the basic structural characteristics of reptiles and mammals to present evidence of the mammal's superiority in adapting to a wide variety of environments on land, in water, and in the air. Presents examples of the mammal's advantages in efficiency of motion, in ability to maintain a constant body temperature, in development of sense organs, in circulatory system, in reproductive system, and in brain capacity

- Kind: Educational
- Year: 1962
- Runtime: 15 min
- By: Encyclopaedia Britannica Films, inc
- Genres: Education, Industrial and advertising
- Archive: [Internet Archive](https://archive.org/details/whatisamammal)
- Licence or status: none stated by the archive
- Who can watch: Kids profiles and older (the archive gives no rating; placed by Invisible Network from its collection and subjects)

[Watch now](https://invisiblenetwork.ai/watch/archive/ia/whatisamammal?play=1)