Mammal
A mammal is a vertebrate animal of the class Mammalia. Mammals are characterised by the presence of milk-producing mammary glands for feeding their young, a broad neocortex region of the brain, fur or hair, and three middle ear bones. These characteristics distinguish them from reptiles and birds, from which their ancestors diverged in the Carboniferous Period over 300 million years ago. Around 6,640 extant species of mammals have been described and divided into 27 orders. The study of mammals is called mammalogy.
Read Full WikiDEFINITIONS
- nounAn animal of the class Mammalia, characterized by being warm-blooded, having hair and feeding milk to its young.
- nounA vertebrate with three bones in the inner ear and one in the jaw.
Related Wiki Articles
Library Results
TV Shows
- Mammals
In the new Original series, revelations and secrets come to light as the complexity of modern mar... - Mammals
Full of new, never-before-seen behaviors, this series offers fascinating insights into the most s... - The Life of Mammals
David Attenborough presents a nature documentary series looking at why mammals are the most succe...
Media & Art
The Labyrinth of Animals; Including Mammals, Birds, Reptiles, & Amphibians - Vol. I
The Labyrinth of Animals; Including Mammals, Birds, Reptiles, & Amphibians - Vol. II
Lincoln Park Zoological Society, Large Mammal Complex, Polar Bear Pool Plan
