African Elephant
The African Bush Elephant's huge ears cool their blood to stop them from overheating. Mentioned here is the length and not height of elephant.
Bison
Bisons are apparently peaceful and lazy animals, but their behavior remains largely unpredictable and is not completely understood.
Blue Whale
As the whale breathes out, it blows a spout of water 9m(30ft) into the air!.
Bottlenose Dolphin
Dolphins smell water with their tongues.
Brown Bear
Brown bears have one of the largest brains of any extant carnivoran relative to their body size and have been shown to engage in tool use (e.g., using a barnacle-covered rock to scratch its neck), which requires advanced cognitive abilities..
Camel
Camels do not directly store water in their humps; they are reservoirs of fatty tissue.
Cassowary
Cassowary is the third-tallest and second-heaviest living bird, smaller only than the ostrich and emu..
Colossal Squid
.
Emperor Penguin
The penguins withstand the worst weather on earth. The air is -60 degree C and the wind is hurricane strength.
Emu
The emu is the second-largest living bird by height, after its ratite relative, the ostrich..
Gaur
Due to their formidable size and power, gaur have few natural predators besides humans..
Giant Clam
Some stories suggests that divers can get their arms trapped inside a giant clam. However, the clam cannot shut its shell completely.
Giant Octopus
The octopus has 1600 suckers. Each of it's tentacles has 200!.
Giant Squid
The squid is the largest animal that does not have a backbone.
Giraffe
Because of their size, eyesight and powerful kicks, adult giraffes are usually not subject to predation, although lions may regularly prey on individuals up to 550 kg.
Gorilla
Gorillas are considered highly intelligent. A few individuals in captivity, such as Koko, have been taught a subset of sign language. Like the other great apes, gorillas can laugh, grieve, have "rich emotional lives", develop strong family bonds, make and use tools, and think about the past and future..
Great White Shark
The shark's skin is covered in tiny, hooked teeth. These help its body to cut through water as it swims along..
Green Sea Turtle
Sea turtles sleep on the seabed holding their breath for several hours.
Hippopotamus
Hippos appear to communicate vocally, through grunts and bellows, and they may practice echolocation, but the purpose of these vocalisations is currently unknown.
Hooded Seal
Hooded seals can dive to 1000m and stay underwater for an hour at a time.
Horse
Horses are adapted to run, allowing them to quickly escape predators, possessing an excellent sense of balance and a strong fight-or-flight response.
Humpback Whale
The jump out of the water, a humback whale swims to surface at 18km/h - as fast as Usain Bolt!.
Ichthyosaurus
They have been found to be as large as 21 m.
Liger
The liger is a hybrid offspring of a male lion and a female tiger..
Lion
Of the living felid species, the lion is rivaled only by the tiger in length, weight and height at the shoulder..
Lion Mane Jellyfish
The jellyfish's tentacles can trail 37m into the water - which is longer than a blue whale!.
Manatee
Lonely sailors mistook manatees for naked women in the ocean. This is where the idea of mermaid comes from..
Manta Ray
Manta rays visit 'cleaning station' at coral reefs where smaller fishes fish nibble their skin clean.
Megalodon
They have big jaws.
Moose
Although generally slow-moving and sedentary, moose can become aggressive and move quickly if angered or startled.
Narwhal
Apart from the tusk, Narwhals have no other teeth. They eat their food with a powerful suck.
Oarfish
For hundred of years, sailors were scared of oarfish thinking they were some kind of terrible sea serpents.
Oceanic Sunfish
A female sunfish produces more than 300 million eggs every year.
Orca
An orca's brain is five times bigger than a human.
Ostrich
Contrary to popular belief, ostriches do not bury their heads in sand to avoid danger.
Sailfish
A sailfish can swim 100m in 4.8 seconds. Half the time than it takes Usain Bolt.
Saltwater Crocodile
Newly hatched saltwater crocodiles measure about 28 cm (11 in) long and weigh an average of 71 g (2.5 oz).
Sea Lion
Sea lions are related to walruses and seals.
Sea Otter
An area of skin of the size of a stamp has 1,000,000 hair.
Tiger
The Bengal and Siberian tigers are amongst the tallest cats in shoulder height. They are also ranked among the biggest cats that have ever existed.
Walrus
The name Walrus comes from the Viking Language. It means 'horse whale'.
Whale Shark
A bath-full of water passes through a whale shark's mouth every 90 seconds.
White Rhino
By mean body mass, the white rhinoceros falls behind only the three extant species of elephant as the largest land animal and terrestrial mammal alive today..
Yellowfin Tuna
They pull their fins to a side when they are swimming fast.