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Alan，写ctf关于动物知识作业的网站

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Alan，写ctf关于动物知识作业的网站

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https://factanimal.com/animal-facts/

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Here's our big list of the 101 greatest animal facts. This includes some of the most asked, fun, surprising and crazy animal facts from across the animal kingdom. The loudest, deadliest, fastest, largest, most bizarre and random, are all here in our big animal fact list.

1. The loudest animal in the world is a mere 2cm long, prawn. The Pistol Shrimp is capable of snapping its claw shut so rapidly, that it creates a bubble which collapses to produce a sonic blast, louder than a Concorde's sonic boom.

2. Flamingos are not pink. They are born grey, their diet of brine shrimp and blue green algae contains a natural pink dye called canthaxanthin that makes their feathers pink.

3. Otters "hold hands" while sleeping, so they don't float away from each other.

And it's super-cute. Look.

4. Hummingbirds are the only known birds that can also fly backwards.

5. Dolphins use toxic pufferfish to 'get high'.

Dolphins deliberately handle pufferfish causing them to release toxins as a defence mechanism. These toxins can be deadly in high doses, but also have a narcotic effect - and are a powerful hallucinogenic, which dolphins appear to enjoy.

6. The Inland Taipan (also known as, the Western Taipan) is the most venomous snake in the world. A single bite contains enough venom to kill at least 100 fully grown men, and can kill within just 30 minutes, if left untreated.

They very rarely ever come in contact with humans, however. Every reliable identification of a snake bite victim from an Inland Taipan have been herpetologists, when handling or studying the snakes. They have all survived, due to successful treatment with antivenom.

7. The worlds deadliest animal isn't a shark, bear or tiger, but something far smaller - the mosquito. According to the World Health Organization, 725,000 people are killed each year from mosquito-borne diseases, such as Malaria, dengue fever and yellow fever.

Mosquito outnumber every other animal in the world, apart from ants and termites. They can also be found in nearly every part of the world, which all add up in the risk they pose to humans.

8. There are more than 1.4 billion insects for EACH HUMAN on the planet, according to recent estimates.

Ants have colonised almost every landmass on Earth. Their population is estimated as 10 ⁷-10 ⁸ billion alone, in comparison to approx. 7 billion humans on the planet.

9. The shortest living animal in the world is the Mayfly. Its entire adult lifespan is just 24hrs.

The Mayfly reproduces and then dies, during that short 24hr period of life. Some species of Mayfly only live for 8-10 hours. Although they have the shortest adult lifespan, they actually exist as a nymph in water from 3-7 years, depending on species.

10. The horned lizard is able to shoot blood from its own eyes, up to a distance of 3 feet away. The rather bizarre and disgusting act is a defensive mechanism to confuse predators.

11. Roosters prevent themselves from going deaf due to their own loud crowing, by tilting their head backs when they crow, which covers their ear canal completely, serving as a built-in ear-plug.

12. Little is known about the elusive Giant squid, however the largest squid ever found measured over 50 feet and weighed nearly a tonne.

13. The pangolin is able to roll up into an armour-plated ball, so lions can't eat them.

If only this worked for poachers, who simply pick them up when they roll into a ball.

14. Koalas can sleep for up to 22 hours a day.

Koala need more sleep than most animals, because their diet of eucalyptus leaves contain toxins, are very low in nutrition, and high in fibrous matter - so they take a large amount of energy to digest!

15. Swifts spend most of their lives flying in the air, and can fly for almost an entire year, without ever landing.

16. Even after having its head cut off, a cockroach can still live for weeks .

17. A group of parrots is known as a pandemonium.

And the collective noun for porcupines, is a prickle.

18. Cows poo up to 15 times a day, which can be as much as 115 pounds of manure per day, or approximately 21 tons per year.

19. A common garden snail has 14,000 teeth.

Their microscoptic teeth are called radula, and some species actually have over 20,000 teeth.

20. A Blue Whales tongue can weigh as much as a car, or a small adult elephant.

A Blue Whales tongue can weigh approx. 2.7 tonnes, or 6,000 - 8,000 pounds (2,720 - 3,630 kg).

21. The longest living, verified animal is a Madagascar radiated tortoise, which died at an age of 188 years in May 1965.

22. The fastest land animal on the planet is a cheetah. It can reach speeds of up to 75 mph (120 kph).

While the Peregrine Falcon is the fastest bird, with a diving speed of 242 mph (389 kph). The fastest animal in horizontal flight is the brazilian free-tailed bat, which can reach speeds of 100mph. The sailfish and black marlin are joint fastest sea animals, and can swim up to 22 mph (36 kph).

23. Baby elephants suck their trunks for comfort.

Just like babies and young children suck their thumbs, awwww.

Photo courtesy of Darkroomillusions.

24. The Nile crocodiles jaws can apply 5,000 pounds of pressure per square inch - the strongest bite of any animal in the world.

A human's jaw produces 100 pounds of pressure per square inch in comparison. A crocodiles bite is 10 times more powerful than that of a great white shark

25. Axolotl are able to regenerate lost limbs and body organs.

Mexican walking fish can regrow the same limb up to 5 times, and even regenerate parts of its brain.

26. The Giant Pacific Octopus has 3 hearts, 9 brains and blue blood.

They are also able to change their colour and texture to camouflage themselves in a blink of an eye.

27. A flea can jump distances 200 times their body length.

They are able to jump 10 inches (25cm) vertically and up to 18 inches (45 cm) horizontally, making them one of the planets best jumpers relative to its size. It's equal to a human jumping as high as the Empire State Building in New York.

28. The male seahorse goes through pregnancy and gives birth to babies. They are the only animal on earth where the male carries the baby rather than the female.

The male seahorse has a pouch on its stomach in which to carry babies-as many as 2,000 at a time.

29. Pufferfish can contain a tetrodoxin, a toxin that is up to 1,200 times more deadly than cyanide to humans. There is enough toxin in one pufferfish to kill 30 adult humans, and there is no known antidote.

Amazingly despite this, some pufferfish meat is considered a delicacy in Japan. The meat called Fugu, is expensive and only prepared by licenced chefs with over 3 years of rigorous training who remove toxic parts of the meat for diners.

30. The loudest animal relative to size is the Water Boatman, which measures at just 12mm long, but can produce 99 dB of sound by rubbing its genitalia across its abdomen.

31. The howler monkey is the loudest land animal. Its calls can be heard from 3 miles (5 km) away.

At its peak, the howler monkey can produce sounds that reach 140 decibels. That's as noisy as a jet engine, on take off!

32. There is an average of 50,000 spiders per acre in green areas.

There's over 45,000 known spider species, with the venom of a few only known to be dangerous to humans.

33. The aptly named colossal squids eyes are as large as a basketball.

34. White-tailed jackrabbits are the greatest land jumpers, having been recorded leaping an astonishing 21ft (6.4m) vertically.

35. Grey-headed Albatross can circle the globe in only 46 days.

36. Giraffes are the tallest land animal in the world, reaching heights of 19ft (5.8 m). The ostrich is the world's tallest bird. It can grow up to 9 feet (2.7m) tall.

Over 2 metres (7ft) of a giraffes total size is its famously long neck, which helps it reach leaves in tall trees.

37. An ostrich legs are so powerful that their kicks can kill a lion.

Or a human! Each two-toed foot has a long, sharp claw - making them formidable weapons. Animals often end up running away from the ostrich.

38. The dementor wasp paralyses cockroaches with venom to its head, turning them into a zombie-like state. The toxins leave the cockroach unable to control its own movements, which incredibly makes it run into the wasps nest to meet its demise.

The venom is thought to cut brain activity that makes cockroaches sense fear and run away to safety. The dementor wasp will then lay eggs on the cockroach to act as an incubator for its young.

39. More than half of all pigs in the world are kept by farmers in China.

There are over 440 million pigs in China. United States in comparison has a mere 73 million pigs.

40. Polar bears have jet black skin under their white fur coats.

It helps them absorb heat to keep warm, while the white fur helps provides camouflage in the snowy and icy environment they live.

41. Giant anteaters consume up to 35,000 ants and termites in a single day.

They use their long sticky tongues to slurp up hundreds of ants per minute. Interestingly, anteaters purposefully never destroy an ant nest, preferring to leave some ants alive to rebuild, so it can return and feed again in the future.

42. The little known pangolin is the worlds most poached and trafficked animal.

This is due to the high demand of their scales and meat in Asian cultures. 70% of Chinese citizens believe pangolin products have medicinal value, when its been scientifically proven to be false.

43. Great white sharks can detect a drop of blood in 25 gallons (100 litres) of water and can even sense tiny amounts of blood from 3 miles (5 km) away.

They use their acute sense of smell to detect blood using an organ called the 'olfactory bulb'.

44. The Naked Mole-Rat can live in an almost zero oxygen atmosphere.

Incredibly, in a zero oxygen environment, the Naked Mole-Rat can still survive for up to 20-minutes without suffering any harm at all.

45. The smell of a skunk is powerful enough for a human to smell it up to 3.5 miles (5.6 km) away.

The foul smelling spray from a skunk can also cause skin irritation and even temporary blindness.

46. The most venonmous fish in the world is the 30cm Stonefish.

Stonefish have 13 sharp fin spines on their back, each with two venom glands. Their stings are extremely painful, can be lethal to humans, and mostly occur as a result of stepping on the creature.

47. Only 5% of cheetah cubs survive to adulthood.

A study in the 90's in the Serengeti found that 95% of cheetah cubs died before reaching adulthood. Many deaths were due to Lions, but also other predators and disease.

48. A tigers rear legs are so powerful, that they have been found remaining to stand even after death.

Tigers have been witnessed to have been shot, bled out, and died - and remained standing throughout.

49. A Rhinoceros's horns are made of 'keratin', the same type of protein that makes up hair and fingernails.

Some species of Rhinos have two horns, while others just have a single horn.

50. The Alpine Swift is able to stay airborne for over 6 months without touching down.

51. The Edible Dormouse (Glis glis) is able to hibernate the longest - up to 11-months of the year when food availability is low.

52. Japanese Macaques play with snowballs for fun.

These snow monkeys have been observed rolling up snowballs, then pushing them down hills just for the heck of it. Others gather lumps of snow in a ball and carry them around, proudly sometimes to the envy of other monkeys who try to steal it.

53. Sperm whales are the world's largest predator.

54. The largest insect to ever live was a "dragonfly" with a wingspan of over 75cm (2 and a half feet) across.

55. Koala's have fingerprints almost identical to human.

56. Greenland sharks are the longest living vertebrates on earth, with one individual thought to be over 400 years old

57. The blood 'Dracula ant' has the fastest recorded animal movement when it snaps its mandible.

58. The box jellyfish is considered the most venomous marine species in the world.

59. The Japanese Spider Crab has the longest leg span of any arthropod.

From the tip of one claw to the other can be as long as almost 4m! Japanese spider crabs have 10 legs stretching out from a central body, giving it its spider like appearance. They live deep in the oceans south of Japan.

60. Some albatrosses are lesbians.

61. Some corvids (crows, rooks, ravens etc,) can understand physics.

62. Sheep can recognise faces.

63. Tardigrades can survive in space and go without eating for more than 10 years.

64. Duck-billed platypus don't have nipples, instead they concentrate milk to their belly and feed their young by sweating it out.

The milk emerges from pores in the skin of the abdomen which the platypus puggles then lap up.

65. Echidna's are relatives of duck-billed platypuses and have a beak, spikes, a kangaroo-like pouch, and lays eggs.

They are small at just 30-45cm and are known as spiny anteaters. One of the few egg-laying mammals, echidna lay a tiny egg which is then transferred into a kangaroo-like pouch where it then hatches.

66. Rabbits don't have pads on their paws. Only fur.

Rabbits are a bit like hobbits, in that they have furry feet! They are the only land mammals that do not have paw pads. Paw pads are thought to help animals run faster, whereas rabbits move in a different way, and the thick fur still provides cushioning.

67. The Yangtze giant softshell turtle is the biggest freshwater turtle in the world.

It weighs between 150 to 220 kilograms (330 to 485 pounds) and is over 100cm (39in) in length. They are found primarily in the area of the Yangtze River in China.

68. Pea Crabs are miniature crabs that spend their whole lives inside oysters, clams, and mussels.

Named because it is the size of a pea, this tiny crab relies entirely on its host for food.

69. The Mariana snailfish is the deepest fish in the ocean, living up to around 8,000m below the surface.

70. The shoebill stork can swallow baby crocodiles whole.

These huge birds are over a meter tall (up to 5 feet) and have a wingspan of more than 2 m (almost 8 feet!). Its name comes from its huge beak which is over 20cm long and almost that wide. Along with lungfish, it also eats baby turtles and baby crocodiles whole.

71. Lungfish are the only fish that have both lungs and gills.

This allows them to survive when the water in their ponds/lakes dries up.

72. Electric eels are in fact not eels, and give a shock strong enough to knock out a horse.

73. The yellowhead jawfish incubates its eggs in its mouth.

The male gathers up all of the eggs once they've been fertilised and stores them in his mouth until they hatch.

74. The patu digua is thought to be this smallest spider in the world at just 0.37 mm.

This Colombian spider is about one fifth the size of the head of a pin.

75. Vampire bats share blood with their friends.

76. The U.S. military trained bottlenose dolphins.

77. Wojtek the bear was a corporal in the polish military during WWII.

Wojtek was brought by polish shoulders while in Iran. He was made an officer so that he was allowed rations and eventually was promoted to corporal. He helped out by carrying boxes of ammunition.

78. Horned lizards shoot blood out of their eyes.

To scare of predators, this lizard shoots blood out of its eyes.

79. Cuckoo birds hide their eggs in the nests of other species.

The other bird species then raises the cuckoo chick as if it were its own, and the cuckoo mother doesn't have to do any of the work.

80. Elephants mourn their dead.

Elephants will return to the place where family members died and stand in silence over the bones, sometimes bowing their heads.

81. Meerkat parents train their offspring to hunt scorpions.

They will bring back dead or almost dead scorpions back to the younger ones so that they can practice killing them without getting stung.

82. Only 3-5% of mammals are monogamous.

The majority of mammals are not monogamous, making humans unusual.

83. Gorilla's have been seen dismantling traps set by poachers.

84. The earliest found depictions of dogs come from 8,000 years ago.

Dogs have been human-kinds best friend for a long time, with a carving in a rock face in Saudi Arabia showing a man hunting with 13 dogs. Two of them even have leads!

85. Cat's were domesticated 9,500 years ago in Ancient Egypt.

They were worshiped in Ancient Egypt and some historians report that it was illegal to kill a cat.

86. Emperor penguins are the world's biggest penguins, and they trek 50-120 km (31-75 m) across the Antarctic to reach breeding colonies.

The impressive emperor penguins reach 100 cm (39 in) in length and weigh 22 to 45 kg (49 to 99 lb). They breed during winter, when they emerge from their more natural habitat in the ocean to trek long distances over treacherous ice.

87. Yaks are specially adapted to high altitudes, with a huge lung capacity and small red blood cells.

88. Cuvier's Beaked whales are one of the deepest diving mammals and can collapse their lungs to survive the high pressure.

89. Orangutans are the heaviest tree-dwelling animals.

There are three species of orangutan and adult males of all three typically weigh around 75kg (165lb) while females are ~37 kg (82 lb). They are ~1.5m(5ft) tall and have a huge arm span of ~2m (6ft). They spend most of their time up in the canopy, making them the heaviest tree-dwelling animal.

90. Chimpanzees are very intelligent and make all kinds of tools.

91. Shrike's impale their prey on sticks to save them for later.

Also known as "butcherbirds" they are famous for being fairly brutal songbirds. They catch all kinds of animals, including crickets, lizards, and small birds, and impale them on sticks to save them for later.

92. Vultures urinate and defecate on their own legs and feet to cool off on hot days.

This a cooling mechanism called 'urohydrosis'. Weirdly this can also help kill any bacteria picked up from walking through dead animals which they prey upon.

93. The wood frog spends 7 months of the year frozen.

94. Certain animals have anti-freeze proteins that allow them to survive extreme temperatures.

These anti-freeze proteins prevent water in the cells of the animals from crystalising and forming ice. Examples of animals with this superpower include the winter flounder and the eelpout.

95. Honeypot ants swell up to a huge size with food.

Honeypot ants have to be seen to be believed. During wet season, certain ants consume huge amounts of nectar, making their abdomens swell up to the size of a grape. Then, during dry season, they provide the other ants with food by throwing the nectar back up again. Yum!

96. The lesula, discovered in 2007, has giant human like eyes and a blue bottom.

This relatively newly discovered monkey lives in the Congo. The lesula eyes are very distinctive because of their human-like appearance, as are their bright blue bums.

97. The Donald Trump caterpillar looks identical to the ex-president's hair.

98. Bees have 5 eyes. 2 at the front like a fly, and 3 smaller eyes like a spider.

The three 'ocelli' eyes on the top of its head detect light, so the bee can sense if it's being approached by a predator.

99. Giant vampire bats lived 100,000 years ago and had a wingspan of 50cm (20 inches).

These giant bats were roughly 30% larger than the modern vampire bats. The remains of one were recently found in a cave in Argentina.

100. There are no 'male' Mourning geckos.

They are an all female species, as they are 'parthenogenetic', meaning it can reproduce without males. Around 70 species in the world have shown this behaviour, including some crabs, snails and the Komodo dragon.

101. There are an estimated 8.7 million species on earth and more than 80% of them are undiscovered.

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101 Greatest Animal Facts That Will Blow Your Mind - Fact Animal

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The 101 most bizarre and surprising animal facts in the world. Weird, unusual and extraordinary facts about animals that will amaze you!

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baidu.com

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Alex-这是一个可以帮助你快速找到“同义词”以及“词意”的一个英文单词网站

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Alex-这是一个可以帮助你快速找到“同义词”以及“词意”的一个英文单词网站

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https://www.merriam-webster.com/thesaurus

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The economy of Canada is a highly developed mixed economy with 10th largest GDP by nominal and 16th largest GDP by PPP in the world. As with other developed nations, the country's economy is dominated by the service industry, which employs about three quarters of Canadians.