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MAMMALS

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Cats-dogs-wolves-foxes-bears-otters-mink- weasels-skunks-seals-walruses-sea lions ... cattle-sheep-pigs-deer-giraffes. Hoofed herbivores with even # digits per foot ... – PowerPoint PPT presentation

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Title: MAMMALS


1
MAMMALS
2
all MAMMALS have
air sacs?
diaphragm?
feathers?
nursing young?
hundreds of babies at once?
scales?
different teeth?
hair?
3-chambered hearts?
rows of teeth?
ability to learn?
4-chambered hearts?
glands?
3
MAMMAL CHARACTERISTICS
  • Hair covers body for insulation
  • Endotherm (4-chambered heart energy)
  • Diaphragm to move air in/out of lungs
  • Mammary glands produce milk
  • Differentiation of teeth
  • Internal reproduction with placenta
  • Large and complex brains
  • Adapted limbs (walk/run/swim/fly/burrow/climb)

4
3 Main Mammal Groups
  • 1) MONOTREMES
  • egg-laying mammals
  • Only two remain

Platypus
Spiny Anteater
5
3 Main Mammal Groups
  • PLACENTAL MAMMALS
  • placenta organ of exchange for mother baby
  • 18 orders of placental mammals

6
Order Insectivora
moles
hedgehogs
shrews
7
Order Chiroptera
Bats
8
Order Carnivora
  • Cats-dogs-wolves-foxes-bears-otters-mink-
  • weasels-skunks-seals-walruses-sea lions

9
Order Edenta
  • Sloths-anteaters-armadillos

10
Order Rodentia
  • squirrels-beavers-rats-mice-hamsters-porcupines-gu
    inea pigs

3000 species
11
Order Lagomorpha
  • rabbits-hares-pikas

12
Order Primates
  • lemurs-monkeys-apes-humans

13
Order Perissodactyla
  • horses-zebras-tapirs-rhinoceroses

Hoofed herbivores with odd digits
14
Order Artiodactyla
  • cattle-sheep-pigs-deer-giraffes

Hoofed herbivores with even digits per foot
15
Order Proboscidea
  • Elephants

mammoth mastodon extinct
16
Order Sirenia
  • sea cows and manatees

17
Order Cetacea
  • whales-dolphins-porpoises

The blue whale is the largest animal ever!
18
3 Main Mammal Groups
  • MARSUPIALS
  • babies are born early, then enter pouch
    (marsupium) for further development
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