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Ground squirrel The ground squirrels are members of the squirrel family of rodents, which generally live on or in the ground, rather than trees. Scientific name: Marmotini Class: Mammalia Family: Sciuridae Lifespan:  Eastern chipmunk : 3 years,  Siberian chipmunk : 6 – 10 years Mass:  Groundhog : 3.9 kg,  California ground squirrel : 600 g,  Rock squirrel : 660 g, Length:  Groundhog : 41 cm,  Rock squirrel : 27 cm,  Siberian chipmunk : 18 – 25 cm,  Hedgehog A hedgehog is any of the spiny mammals of the subfamily Erinaceinae, in the eulipotyphlan family Erinaceidae. There are seventeen species of hedgehog in five genera found through parts of Europe, Asia, and Africa, and in New Zealand by introduction. Lifespan:  Woodland hedgehogs : 2 – 5 years Class: Mammalia Scientific name: Erinaceinae Length:  Woodland hedgehogs : 20 – 3...

Hyenas or hyaenas are feliform carnivoran mammals of the family Hyaenidae. With only four extant species. {The four living species of hyena, clockwise from upper left: spotted hyena (Crocuta crocuta), brown hyena (Hyaena brunnea), aardwolf (Proteles cristata) and striped hyena (Hyaena hyaena) } , it is the fifth-smallest biological family in the Carnivora, and one of the smallest in the class Mammalia. Despite their low diversity, hyenas are unique and vital components of most African ecosystems. Family: Hyaenidae; Gray, 1821 Scientific name: Hyaenidae Spotted hyena The spotted hyena is the largest species, and it grows to 4 to 5.9 feet (1.2 to 1.8 meters) long and 2.5 to 2.6 feet (77 to 81 centimeters) tall from paw to shoulder. They weigh 88 to 190 lbs. (40 to 86 kg). Unlike other species, spotted females are 10 percent heavier than males, according to the  San Diego Zoo . The spotted hyena's coat is sandy, yellowish or gray, according to the  Animal Diversity We...

Golden Lancehead viper(Bothrops  insularis) which is located at Aboard Brazil's snake island or Ilha de Queimada Grande, which is about 90 miles from the city of Sao Paulo. ... The snake's venom is said to be three to five times stronger than that of any mainland snake. Also, it's capable of melting 'human flesh,' and a human bitten by it can be dead within an hour. DOMINATED LOCATION A NEW documentary has revealed what it's like to visit Snake Island, an inhabitable place where some 4,000 deadly vipers live. The snakes on the island are golden lancehead vipers, which are considered one of the most dangerous in the world, with venom so potent it could melt flesh. History on the island About 25 miles off the coast of Brazil, there is an island where no local would ever dare tread. Legend has it that the last fisherman who strayed too close to its shores was found days later adrift in his own boat, lifeless in a pool of blood. The mysteriou...

Whales are a widely distributed and diverse group of fully aquatic placental marine mammals. They are an informal grouping within the infraorder Cetacea, usually excluding dolphins and porpoises. Whales, dolphins and porpoises belong to the order Cetartiodactyla, which consists of even-toed ungulates whose Phylum is Chordata under the Order: ArtiodactylaLifespan of a Blue whale is 80 – 90 years,That's of a Killer whale is 29 yearsMass of an average Blue whale is 50,000 – 150,000 kg,Mass of an average Killer whale is 3,600 – 5,400 kgGestation period of a Blue whale is 10 – 12 months, Killer whale is 15 – 18 months,Length of a  Blue whale is 25 m, Killer whale is 6 – 8 m  Whales roam throughout all of the world's oceans, communicating with complex and mysterious sounds. Their sheer size amazes us: the blue whale can reach lengths of more than 100 feet and weigh up to 200 tons—as much as 33 elephants. Despite living in the water, whales breathe air. And like humans, t...

A cheetah is know to be from the cat family with a more  flexible  than other cat  spines . The  spine  is so  flexible  that it allows the  cheetah  to quickly move its two back feet ahead of its two front feet. Along with some unique hips, this movement helps the  cheetah  get more distance per stride. This allows the  cheetah  to take four long strides each second which makes it possible for them to clock 60mph (93km/h) in 3 seconds....... The cheetah (Acinonyx jubatus) is a large cat native to Africa and central Iran. It is the fastest land animal, capable of running at 80 to 128 km/h (50 to 80 mph), and as such has several adaptations for speed, including a light build, long thin legs and a long tail. Cheetahs typically reach 67–94 cm (26–37 in) at the shoulder, and the head-and-body length is between 1.1 and 1.5 m (3.6 and 4.9 ft). Adults typically weigh between 20 and 65 kg (44 and 143 lb). Its head is s...