This presentation gives the clear details on the Mammals. Information on all type of Mammals are included. Fast and quick facts are also included. The pictures are neatly depicted by which one can understand easily. Gestation period of Mammals are depicted in an order. Some rarely observed Mammals are shown in the initial slides. Parents and Teachers find this presentation very helpful as this is very easy to explain their Children. Even, Civil Service Exam aspirants and other exam aspirants like Life Sciences, Groups etc., find this presentation helpful and useful for their preparation.

1. About MAMMALS

3. • African Elephant: 660 Days

4. • Asiatic Elephant: 600 Days

5. • Baird’s Beaked Whale: 520 Days

6. • White Rhinoceros: 490 Days

7. • Walrus: 480 Days

8. • Girafee: 460 Days

9. • Tapir: 400 Days

10. • Dromedary: 390 Days

11. • Fin Whale: 370 Days

12. • Llama: 360 Days

13. • Human Beings: 280 Days

14. • Mammals are Vertebrates distinguished by their
ability to produce milk to feed their young.

15. • They grow hair ------ sometimes a full-body
covering of fur and sometimes just a few
whiskers here and there.

16. • Mammals are typically considered warm-
blooded, although the naked mole rat, and
African species, may present an exception to this
rule.

17. • Mammals are divided into three large groups
based on methods of reproduction:
– Monotremes,
– Marsupials and
– Placental mammals.

18. • Monotremes lay eggs, Marsupials give birth to
under developed young that mature in a pouch of
skin on the Mother’s abdomen, and placental
Mammals give birth to developed young that are
nourished during gestation by a Placenta.

19. • There are about 5,000 species of Mammals,
which evolved from reptiles some 200 Million
years ago.
• Rodents represent almost half of these species.

20. • Mammals live on the land and underground, in
the air, and in both salt and fresh water.

21. • They inhabit all the continents except Antarctica,
although even there marine mammals live in
surrounding waters.

22. • PRIMATE KIN

23. • Primates as a group are intelligent, largely tree-
dwelling mammals with forward-looking eyes
that allow them to see in three dimensions.

24. • They possess opposable thumbs, enabling them to
grasp objects well.

25. • Primates form two main groups:
• The Lower Primates or Prosimians, including
lemurs, bushbabies, and tarsiers; and
• The Higher Primates, or Monkeys and Apes.

26. • Humans are primates: Recent investigations
suggest that ONLY ABOUT ONE PERCENT of
the Human genome differs from that of
Chimpanzees.

27. • Socially and physically, we seem to be most like
the Bonobo. Chimps, Bonobos and other
Primates ---- and a number of other mammal
species including elephants and Dolphins -----
exhibit significant intelligence, but relative to
body size, Humans have the largest Brain and the
greatest surface area of the cerebral Cortex, an
anatomical difference that results in distinctive
function such as language.

28. • Wild Primates live in Rain forests, mainly in the
tropical and subtropical regions of Africa, Asia,
and South America.
• Among the higher primates, Monkeys are
classified as Old and New World Monkeys, based
on range and physical characteristics.

29. • Apes’ right distinguishing features include
upright posture, shorter spine, no tail and
profound differences in intelligence.

30. • PLACENTA: Organ in most Mammals the that
develops in the Uterus along with a foetus to
mediate metabolic exchange.
• GENOME: All the genetic content contained
within an organism, made up of molecules of
Deoxyribosenucleic Acid (DNA).

31. EGGS, POUCHES, WINGS: EXCEPTIONAL
MAMMALS

33. • Monotremes and Marsupials present exceptions
to certain Mammalian rules.
• Bats are the only Mammals that truly fly.
• Flying Squirrels simply glide.

34. • Like Reptiles and Birds, Monotremes lay eggs;
but like Mammals, female monotremes nurse
their young Marsupials give birth to extremely
immature young that complete their development
in a pouch or fold of skin, complete with a milk
source, on the Mother’s body.

36. • Fast fact: In Mozambique, trained giant
pouched Rats detect explosive and land
mines.

37. SEA MAMMALS

38. • Whales, Dolphins and Porpoises are Sea
Mammals known as Cetaceans.
• Some Scientists believe these animals descend
form a land-swelling ancestor that resembled a
small semiaquatic Deer.

39. • Over time, bodies became streamlined, rear legs
were lost front legs became flippers, and a
powerful, fluked tail developed.

40. • Cetaceans spend their entire lives in the water.
• They form two groups, based on how they feed:
– Toothed Whales and
– Baleen Whales.

41. • Among the Toothed Whales, Orcas hunt in pods
and consume fish as well as other marine
Mammals.

42. • Baleen Whales represent the Sea’s largest
creature, although they feed on tiny prey such as
Plankton.

43. • Bony, meshlike plates hang from their top jaws
and filter the prey from ingested Water.

44. • The Blue Whale can take in more than 4 tons of
food each day.

45. • When sailors of yore glimpsed the manatee in
warm, murky tropical waters, their eyes
sometimes tricked them into seeing a beautiful
maiden with a long fishlike tail. Thus may have
begun the legend of the mermaid, reflected in the
class name for manatees and dugongs -----
Serenians.

46. • These large, slow mammals with vestigial parts
from their land-based ancestors graze sea grasses
and other plants in tropical and subtropical
waters.

47. • Sea Otters, relatives of the Weasel, inhabit the
Pacific Coastal waters of North America and
Asia.

48. • They lack the layer of blubber that other Sea
Mammals have for warmth but compensate with
the thickest fur of any mammal. Their numbers
have declined drastically due to the fur trade.

49. • Many species of sea mammals appear on the
endangered species list. Sea Otters carry
protected status in the United States.

50. • Sea Otters and Their Tools:

51. • One of the smallest Sea Mammals, the Sea Otter
has mastered the shallow coastal waters of the
northern Pacific Ocean.

52. • It lives most of its life in the water, where it feeds
on Sea Urchins, Abalone, Mussels, Cams, Crabs,
Snails, Fish, Octopus, and other Sea creatures.

53. • The Sea Otter belongs to an exclusive club of
tool-users that includes only a small number of
Animal species such as Primates, Elephants, and
some Birds.

54. • Diving more than 300 feet to obtain food, the Sea
Otter may bring a Clam or other Mollusk to the
surface along with a rock.

55. • Floating on its back, it rests the rock on its chest
and repeatedly bangs the clam against the Rock
until it opens.

56. • Mothers raise their young totally offshore.
• A Mother’s body serves as a bed, playpen, dining
room and diving platform for the young pup as it
learns the ways of the Ocean.

57. • To keep Her young from floating away, a Mother
will wrap kelp around Herself and Her pup.

58. • FAST FACT: Sea Otters have upto a Million
hairs per square inch of skin.

59. • What happens when a Blue Whale dies?

60. • The largest Animal species, the Blue Whale can
weigh 200 tons. When a Blue Whale dies, other
Animals may feast on it remains FOR MORE
THAN A CENTURY!

61. • When the carcass sinks to the ocean floor, it is
first swarmed by mobile scavengers such as
Sleeper Sharks, Hagfish, and King Crabs who
nibble away at soft tissue ---- for up to a decade.

62. • When they finch, Worms, Snails, Clams, and
Limpets settle in on the lipid-rich carcass for
another ten years or so.

63. • Joining them are recently discovered gutless
zombie worms that bore into the bones and mine
the lipids, assisted by Bacteria inside their bodies.

64. • Then more Clams, Snails, Crustaceans, and
Worms feed on sulfides released by Bacteria
inside their bodies.

65. • This stage may last a hundred years.
• Even after all the nutrients are depleted, the Blue
Whale’s crumbled carcass provides a reef like
home for filter feeders.

66. • Plankton: From Greek planktos, “wandering” or
“drifting”.
• Marine and freshwater organisms that exist in a
drifting, floating state.

67. [These are some details on Mammals].

68. References:

69. Thank
you,
Keep
Learning
and
Be
HAPPY!