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Explore Mammals: Characteristics, Classification, and Orders

Discover the fascinating world of mammals, creatures with unique traits like hair for camouflage and mammary glands for nursing. Learn about their well-developed respiratory and circulatory systems, specialized teeth, and limbs. Explore the classification of mammals into monotremes, marsupials, and placentals, each with distinct features. Dive into different orders of placental mammals, from Artiodactyla to Rodentia, showcasing diverse adaptations and behaviors.

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Explore Mammals: Characteristics, Classification, and Orders

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  1. Unit 9Chapter 32Mammals

  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)

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