Mammals
Mammals are a special group of animals. All mammals...
• are vertebrates, which means they have a backbone or spine.
• are endothermic (warm blooded)
• have lungs and need oxygen to breathe
• have hair
• have three middle ear bones
• have mammary glands that produce milk for their young
• have a neocortex (a region of the brain).
The mammals include the largest and most intelligent animals on the planet. The basic body type is a four-legged land-borne animal, but some mammals are adapted for life at sea, in the air, in the trees, or on two legs.