1. Unit 9 Chapter 32 Mammals

2. What is a Mammal? Hair, providing insulation, waterproofing, & camouflage Mammary glands, modified sweat glands, to nurse their young

3. What is a Mammal? Mammals have well-developed respiration & circulation to maintain high energy needs: Diaphragm, breathing muscle expands chest to bring in more oxygen Four-chambered heart

4. What is a Mammal? Mammals lifestyle is determined by: Specialized teeth adapted to the type of food they eat Specialized limbs adapted to methods of food-gathering

5. Mammal Classification Monotremes, egg-layers Includes duck-billed platypus & spiny anteater

6. Mammal Classification Marsupials, pouched mammals Includes Kangaroo, Koala, Opossum

7. Mammal Classification Placentals (90% of all Mammals) Placenta is an organ that nourishes the young while inside the uterus (womb) Gestation, period of time young develops in uterus; ensures offspring are protected from predators & environment

8. Orders of Placental mammals Artiodactyla (hoofed, with even number of toes) Carnivora (specialized hunters)

9. Orders of Placental mammals Cetacea (adapted to aquatic environment) Chiroptera (only mammal with true flight)

10. Orders of Placental mammals Insectivora (includes world’s smallest mammals) Lagomorpha (includes some of the fastest runners, with 2 pairs of incisors)

11. Orders of Placental mammals Perissodactyla (hoofed,with odd number of toes) Primates (superior intelligence, opposable thumbs)

12. Orders of Placental mammals Proboscidea (trunk-nosed) Rodentia (largest order, gnawing incisors)