Mammals are four-limbed endothermic vertebrates. Mammals are characterized by how they warm and cool themselves, by how they eat and digest food, by the structure of their lungs, heart and brain, and by their means of locomotion. Mammals can be herbivores, carnivores, or omnivores depending on their diet.
Mammal: A class of endothermic vertebrates that have four limbs and produce amniotic eggs.
Mammary Glands: The glands that produce milk after the birth of an offspring and carried by female mammals.
Lactation: The production of milk for offspring.
Alveoli: Air sacs in mammalian lungs that improve the efficiency of gas exchange.
Neocortex: Covering on the mammalian brain.
Cerebrum: Most forward region of the brain and is particularly pronounced in mammals. It is responsible for memory and learning
Arboreal: Animal that lives in trees.
Mammals are a very diverse group, yet they share many traits that set them apart from other types of animals.