Mammals

= Magnificent Mamals =

Notes:

Mamal Info Vertibrates: Mamals Mamals are placed into 3 groups determined by reproductive methods 2. Marsupials 3. Placental Mammals
 * Found in a range of environments because they are endothermic and have diverse body plans
 * Dominant animal living in the current era
 * Over 4000 species
 * Smallest: hog nosed bat/ Shrew
 * Largest: Blue Whale
 * Body Structure
 * body covered by hair
 * Specialized teeth for different diets
 * Canines: tearing
 * Incisors: cutting
 * Molars: grinding (especially plants: herbivores)
 * Range of foot structures:
 * walk on food, digits, or one toe (Ex. hoof)
 * Body Function
 * lungs, diaphragm
 * four-chambered heart
 * endothermy
 * Reproduction
 * internal fertilization
 * internal development in uterus
 * nourishment through placenta
 * mammary glands supply milk
 * MOST give birth to live young
 * 1) Monotremes
 * egg-laying mamals
 * lack placenta
 * duckbilled platypus, echidna
 * Pouched mammals
 * Found mainly in Australia and New Guinea
 * Kangaroos, opossums
 * Short gestation period
 * Young develop completely in uterus
 * Nourished by the placenta
 * Gestation: Period of development inside mother
 * Much longer gestation period than other mammals
 * 95% of all mammals

National Geographic Bear Article: []



Hedgehog []

Horse []



Chimpanzee []



Brown Bear

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Coatimundi []