Mammals

Mammal Notes:

 * =====Found in range of environments because they are endothermic and have diverse body plans.=====
 * Dominant animals 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 Structure
 * Walk on foot, 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
 * Mammals placed into 3 groups determined by reproductive methods.
 * Monotremes:
 * Egg-laying mammals
 * Lack placenta
 * Duckbilled platypus, echidna
 * Marsupials:
 * Pouched mammals
 * Found mainly in Australia and New Guniea
 * Kangaroos, opossums
 * Short gestation period
 * Placental Mammals:
 * Young develope completely in uterus
 * Nourished by the placenta
 * Gestation: period of the development inside the mother
 * Much longer gestation period than other mammals
 * 95% of all mammals

Mammal Videos
media type="custom" key="8827438" Cite: [] This video shows a chimp hunting another monkey with tools that it made. media type="custom" key="8827500" Cite: [] This video shows a mom kangaroo and all of the duties she has to take care of when she is watching her babies, and how her body adapts to take care of an embryo.

Mammal Pictures
Australian Kangaroo []

Bengal Tiger []

Orangutan []

Slow Noris []

Dolphins []

[] 1. What act of violence to the whales have the human race been doing in the past two hundred years?