Mammals

There are three groups of mammals;  egg-laying mammals ,pouched mammals and placental mammals. 
These three types of mammals  
are different  for one main reason:  reproductive methods. The egg-laying mammals lay eggs. The pouched 
mammals give birth to underdeveloped offspring. The offspring then spends time in the mother's pouch, 
and mature. The placental mammals keep their offspring inside them then give birth to a fully developed 
offspring.

2. The anteaters and spiny ant eaters were two separate kinds of mammals. the Spiny anteater  lays eggs to 
reproduce, the anteater does not.

3. Two pouched mammals are Kangaroos and Koalas. Their young develop in pouches.

4. Mammary Glands are glands on  the female mammal. They produce milk for the offspring to drink.

5. There are ten types of placental mammals. Here were their names and characteristics.

Name                                     Characteristic
1. Toothless                              No teeth
2. Water dwelling                     Live in water
3. Trunk Nosed                          Have trunks as noses
4. Rodent like                             Similar to rodents
5. Insect Eating                           Insects as food source
6. Flying                                      Flying
7 Primates                                  Ape like
8 Gnawing                                   Eat by Gnawing
9 Flesh Eating                              Carnivorous
10 Even hooved                           Feet were hooves with even sides.

6. Whales were considered mammals for three reasons. First of all, they bear live young. Secondly they 
must surface for air. Lastly, they feed their young with mammary glands.
7. Sharp teeth help predators to devour their prey.

8. Primates were considered the smartest animals because they use their