Mammals

The platypus is one of the few mammals that lays egss. The male platypuses are also venomous. []

Sloths spend their time living in trees and looking for food. Slothes move very slowly. [] Kagaroos are marsupials and raise their young in their pouch. The red kangaroo lives in Australia. [] The vampire bat is one of the few flying mammals. [] The Blue whale is the world's largest mammal. [] Mammal Notes:
 * Found in range of environments because they are endothermic and have diverse body plans
 * Dominant animal living in the current era
 * Over 4000 species
 * Smalles: hog nosed bat/ Shrew
 * Largest: Blue Whale

Vertebrates: Mammals
 * 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 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

Mammal Classification 2. Marsupials 3. Placental Mammals  
 * Mammals placed into 3 groups determined by reproductive methods
 * 1) Monotremes
 * egg- laying mammals
 * 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 the mother
 * much longer gestation period than other mammals
 * 95% of all mammals