1. Mammals Characteristics By: Will Reynolds

2. Mammals Nurse their young Mammals have organs called Glands that secrete various substances needed by the animal Gland- is an organ that secretes substances inside or outside the body. Mammals also feed their young with Mammary Glands. Mammary Gland- Secretes milk for the young

3. Respiration and circulation in mammals Mammals need a high level of energy for heating and cooling their bodies This energy level is sustained when large amounts of oxygen enter the body and reach all the cells Diaphragm- Sheet of muscle located beneath the lungs

4. Mammals have different types of teeth Mammals have different types of teeth modified for the type of food they eat. Hoofed animals chew cud

5. Mammals have modified limbs Mammal limbs are adapted for a variety of methods of food gathering. Primates use their opposable thumb to grasp objects.

6. Mammals Can Learn They can learn and they will always remember what they learn. Dolphins, Killer whales, and monkeys are prime examples of animals that can learn. Monkeys can use sign language to communicate with human

7. Mammals have hair Hair is made out of keratin Hair is used to keep them warm. Mammals are the only animals with hair.