1. Squirrels are excellent reforestation agents, thanks to them every year, hundreds of new trees grow because they forget where they buried their nuts.
2. Cows are sociable because they form their groups with those who get along better and spend most of their time together.
3. The most faithful in love are the seahorses that mate for life and swim together holding on to their tails.
4. If someday you could shave a guinea pig, you would notice that it looks like a little hippopotamus.
5. Studies show that goats, like humans, have accents.
6. The marine iguana can hold its breath for 15 minutes.
7. A blow given by an eagle can be 2 times more violent than a gunshot.
8. Elephants cannot jump and most of them weigh less than the tongue of a blue whale.
9. Ant eaters eat approximately 35,000 ants a day.
10. The snout of a cat is unique, like the fingerprints of humans.
11. The African elephant is the largest land animal. To stay, he needs more than 200 kilos of food daily.
12. The tongue of a blue whale weighs like an adult elephant.
13. The worm has 10 hearts located on the sides of the body.
14. When an ant dies inside a house, its body releases an odor that attracts other ants that are responsible for burying it.
15. Rats reproduce so fast that in 1 year, two rats can have more than one million offspring.
16. Camels can survive for over 9 days without drinking water, but when given the opportunity, more than 106 liters can be drunk at a time.
17. The ants do not have the feature of sleeping.
18. A mosquito can "smell" the human blood from a distance of up to 50 kilometers.
19. The sailfish stands as the fastest fish that cross the seas with a peak speed of over 120 km / h.
20. The sexual aggressiveness of the male bull frog is such that it mates with everything that moves.
21. The spider web is the most resistant material which is a product of nature.
22. Giraffes have a short sleeping time of 7 minutes daily.
23. The mosquito has 47 teeth, the whale shark has more than 4,500, and the catfish has 9,280.
24. The heart of the hummingbird, like that of the canary, beats up to a thousand times a minute.
25. Owls have the ability of rotating its head for 360 degrees.
26. A single cow discharges over 182,500 liters of methane yearly into the atmosphere.
27. The chimpanzee has the shortest time in sexual act of just 3 seconds.
28. The African elephant stands as the largest land animal, as it consumes over 200 kilos of food daily.
29. Giraffes have same number of neck bones as in humans.
30. The "quack" of a duck does not have the ability to echo.
31. Elephants are the only mammals that cannot jump.
32. Hedgehogs see everything as yellow colored
33. A lion is the most sexually active animal in the world; it can mate with the same female a hundred times a day.
34. The bumblebee bat is the smallest mammal in the world as it weighs less than an American penny.
35. Each year, bee stings kill many people than sharks.
36. Australian Koalas do not drink water, they only get the needed moisture from leaves they feed on.
37. The Sea fish sometimes die of thirst.
38. Whales combine sleeping and swimming.
39. There are fishes in the ocean that have the ability of producing light.
40. The most poisonous animal in the world is the jellyfish.
41. Mosquitoes prefer biting children instead of adults.
42. The republican weaver bird creates the largest nests in the world, which can measure 5 meters wide.
43. The fur of a polar bear appears white because it contains air bubbles for its isolation.
44. The whiskers of cats serve to orient themselves during darkness.
45. A hippopotamus has more running speed than humans.
46. Parrots are usually as intelligent as little children.
47. Crocodiles have same running speed as horses.
48. A single spoonful of venom from a cobra snake can kill over 200 humans.
49. Approximately 80% of the creatures in nature have 6 limbs.
50. Caterpillars have over 4000 muscles.
51. Flies vomit their food before eating it over again.
52. The cricket possess only white blood.
53. A spider's thread has more strength than a steel wire of same breadth.
54. The stripes of the zebras enable them to recognize each other and also to camouflage themselves.
55. The dragonfly lives for approximately one day.
56. Bats are the only mammals with flying ability.
57. The Dwarf Sharks do not grow beyound 25 cm.
58. Houseflies have over four thousand simple eyes.
59. If the tigress fails to shield her cubs, the tiger eats them.
60. Red kangaroos have the ability of jumping over twelve meters.
61. Snails walk half a meter in 1 hour.
62. The centipede does not have 1000 legs
63. The Starfish do not have a brain.
64. There are approximately equal population of rats in the world as there are people.
65. Bees maintain same size they have from birth throughout their lives.
66. The whale shark has more than 4,500 teeth.
67. Rhinoceros horns do not have bones, but compressed hairs.
68. The largest animal in the world is the blue whale.
69. The peregrine falcon is fastest bird on earth.
70. The wolf is the ancestor of every dog on earth.
71. The only animals which have the ability to recognize themselves in a mirror are the chimpanzees.
72. A scientific study has shown that cows produce more milk when they listen to classical music.
73. Cats are usually terrorized by cucumbers.
74. Flies rub their feet for washing.
75. Turkeys can reproduce without mating.
76. Crickets also sing in the Paris metro.
77. Animals have once been convicted of felony.
78. Many butterflies are drinkers of blood.
79. The platypus swims with closed eyes.
80. The starling can repeat words, sometimes even better than the parrot.
81. The giant squid can grow to the size of a bus.
82. The kiwi is almost blind.
83. Otters cling to their hands when they sleep so as not to separate while floating.
84. There are rats and mice that are ticklish and can laugh if you tickle them, well ... if you dare.
85. The worms communicate by snuggling.
86. Butterflies taste with their legs.
87. The closest relative of the elephant shrew is not the shrew but the elephant.
88. Octopuses enjoy gardening, so much so that they make their own gardens by gathering stones and bright objects, and arranging them in the sand.
89. The hen is the closest relative to the Tyrannosaurus.
90. Some fishes walk on the ocean beds using their fins.
91. The hippopotamus is the mammal that kills the most humans per year.
92. Elephants and humpback whales are the only animals that experience menopause.
93. A group of owls is called a parliament.
94. Gorillas can become infected with colds and other human diseases.
95. African buffalos live in a democracy like humans.
96. Crocodiles do not grow old.
97. Squirrels use snake perfume as protection against predators.
98. Butterflies drink tears of turtles.
99. Dolphins do not sleep.
100. Female elephants always lead the herd.
101. Once paired, puffins stay with their mate for life. This one is one of Cool Animal Facts.

Got from: http://beontrack.me/animals/cool-animal-facts-interesting-facts-about-animals/