1. What are some examples of mammals?

2. Mammals are highly developed warm-blooded vertebrates that have hair on their body.
Mammals feed on their mother’s milk when young
Humans, bears, giraffes, mice, cats, dogs, whales, dolphins, walruses, and deer are all mammals

3. Most live on land, but some live in water

4. Mammals have two sets of appendages
Mammals have two sets of appendages. Ones that live in water have flippers, and ones that live on land have legs
Many mammals have well developed lips and teeth. Some teeth are special for ripping and tearing, while flat teeth are for grinding food

5. Five Characteristics of Mammals
1. Mammals have hair on their bodies
2. Most mammals give birth to live young
3. Mammals feed their young with milk from their mother’s mammary glands.

6. Mammals care for their young until they can care for themselves
Mammals have well-developed brains

7. Classification of Mammals
There are about different kinds of mammals
A mammal is placed into a group based how it develops form birth

8. Most mammals give birth to live young, but small group lay eggs
Monotremes-mammals that lay eggs
There are two types of monotremes: duckbilled platypus, and the spiny anteater (look at p. 209)

9. The second group of mammals has pouches and are called marsupials
They give birth to live young that are not very developed. The young spend time in a pouch drinking milk and developing

10. The third group of mammals is fully developed at birth and is called placentals
Parents take care of the young until they can take care of themselves.
Examples include deer, mice, elephants, racoons, dolphins, and humans

11. Groups of Placentals
Placentals are grouped into smaller groups based on what they eat, how they move, and where they live.
The largest group is rodents which consist of rats, mice, squirrels, and beavers

12. The only animal in the flying mammal group is the bat which has long finger bones to help develop wings.

13. Meat-Eating Mammals
These mammals have special body structures to help eat other mammals. They have special teeth and claws
Examples: wolves, cats, dogs, bears, seals, and walruses

14. Trunk-Nosed Mammals
Examples are elephants. The trunk is a combination of the nose and upper lip (look at p. 211)

15. Insect-Eating Mammals
Examples are hedgehogs, moles, and shrews.
They have special features that help them find insects (Look at 212)

16. Toothless Mammals Have no front teeth.
Examples include armadillos, sloths, and giant anteaters

17. Hoofed Mammals 2 groups-even toed and odd toed
Even toed examples include sheep, camels, cows, and deer
Odd toed examples include horses and zebras

18. Water Mammals Examples are whales, dolphins, and porpoises
They are not fish because they breathe with lungs and do not have gills
They come to surface to receive air often through a hole on the top of their heads

19. Primates Primates are the most intelligent kind of organism on earth
Examples include monkeys, chimpanzees, orangutans, gorillas, and humans.

20. Special Characteristics of Primates
Movable fingers, flexible thumbs, and advance eyesight
There are more than 200 species of primates
Most live in warm parts of the world, and some live in trees
Nearly all primates live in groups that gather food and each member has a specific job

21. Humans Humans are most highly developed primates
Our skeleton allows us to walk upright, and we communicate with spoken language
We are the only primates that can make and use complex tools