2. MAMMALS 4500 Species Body Hair Produce Milk Warm-Blooded 4-chambered heart Different kinds of teeth Few offspring at a time (1-10) Live Birth (most) Vertebrates (have spinal cords) Three main types: –Monotremes (lay eggs; platypus and anteater only) –Marsupials (pouch for newborns) –Placental (most common)

3. GUERNSEY COWS Milk producing, few offspring, live birth

4. MANATEE Body hair (it’s there!) Live birth Warm-blooded

5. STRIPED SKUNK Few offspring at a time (Thank God!)

6. SHEEP Body Hair (makes a nice sweater) Four-chambered heart

7. BEARS Body hair, different kinds of teeth

8. WOLF 4-chambered heart, live birth, warm blooded

9. IRISH TERRIER Awww….

10. BEAVER Milk-producing, placental, warm blooded

11. HORSES Few offspring at a time, milk producing, body hair

12. COYOTE Different kinds of teeth. (Nice doggy…)

13. PRAIRIE DOGS Placental, 4-chambered heart, warm blooded

14. Elk Body hair (the antlers are made of hair, too!)

15. Koala Marsupial (carries young in a pouch)

16. Albino Wallaby Another example of a marsupial

17. How many mammal characteristics can you remember?