Mammals

1
Mammals

• Pages 486-494 in book.

2
Description

• Hair/fur for warmth.
• Give birth to live young.
• Feed their young milk.
• Endothermic regulate body temp with hair, fat,
  sweating, shivering, and goosebumps.

3
Adaptations for eating

• Carnivore, omnivore, herbivore
• Claws
• Behavioral adaptations hunting
• Three types of teeth
• 1. incisors cut food
• 2. canines stab and tear food
• 3. molars grind food into tiny bits

4
Reproduction

• Internal fertilization
• Young are born alive
• Have few babies, but provide a lot of care to
  raise them to adults

Video lifecycle
Video live young
5
Movement

• Most have legs for walking, running, or hopping.
• Aquatic mammals have fins/flippers for swimming.

6
Adaptations for survival

• Teeth, claws, and or horns to fight
• Hide/camouflage run away
• Intelligence

7
Other

• Mammals include monotremes (egg laying),
  marsupials (have pouches), placental (have
  placenta for young).
• Believed to have evolved from reptiles around 220
  mya.