1. Mammals

2. Mammal Characteristics
Covered with hair/fur made of keratin

3. Mammal Characteristics
Feed their young milk, which comes from mammary glands
Maintain a body temperature different from their surroundings  endothermic

4. Mammal Characteristics
4. Able to cool their bodies by producing sweat 5. Able to keep bodies warm by having a layer of fat

5. Mammal Characteristics
A muscular sheet called the diaphragm increases lung capacity
Have a 4 - chambered heart that prevents blood mixing

6. Nutrition All mammals are heterotrophs
They have specialized teeth that correspond with their diet

7. Nutrition
Mammals that only eat plants are herbivores

8. Nutrition
Mammals that eat only meat are carnivores

9. Nutrition
Mammals that eat all types of food are omnivores

10. External fertilization
Reproduction
External fertilization
All mammals reproduce by internal fertilization
Mammals that lay eggs are monotremes
platypus
echidna

11. Reproduction
Marsupial mammals have a pouch where the embryo completes its development

12. Reproduction
Most mammals carry their young inside a placenta (protective layer of tissue inside the uterus)