List the specific characteristics of mammals.

Mammals are endothermic vertebrates. They have hair and fur on their bodies. Mammals have mammary glands, four-chambered hearts, sebaceous (fat-secreting) sweat and aromatic glands. Have heterodontal dentation (different types of teeth). They have a diaphragm. They have one single jaw. There are three small bones in the middle of the ear. The diaphragm is a muscle wall that is used to separate the heart and lungs from the stomach. The mammalian brain is more advanced than any other animal in the world. The mammalian four-chambered heart helps circulate blood and oxygen throughout the body. Mammals use their lungs to breathe air.