Actually, not quite. The dinosaurs the earliest humans lived among were not the huge lumbering lizards we most commonly think of when we see the word. Those had been extinct for almost 66 million years before the first humans began to make their mark.

Scientists have come to believe that modern placental mammals – from whales to bats, and yes, humans too – descended from small furry mammals that lived during the age of the dinosaurs.

rex would pretty much pulverize you. “You’d be pierced and crushed from both sides as these jaws clamp down,” Holtz says. “They would smash all the way through the bones and crush them. You’d be dying from massive shock pretty quickly.”

A Tyrannosaurus Rex might be known for its ferocious bite, but now scientists say a caiman that lived eight million years ago, had a bite TWICE as powerful. Known as Purussaurus brasiliensis, the reptilian predator lived in the Amazon region in South America.

rex,” Healy said, “would need the same daily calories as 80 people” on a diet of 2,500 calories per day. That translates to about 140 kilograms of meat, which the virtual T.

3.7 – 6.1 m

about 28 years

4,500 – 8,000 kg

thirty years old

Tyrannosaurus rex looked the most ferocious of all the dinosaurs, but in terms of overall cunning, determination and its array of vicious weapons it was Utahraptor that was probably the fiercest of all. Utahraptor measured about 7 metres, and was a very powerful, agile and intelligent predator.

Giraffatitan (name meaning “titanic giraffe”) is a genus of sauropod dinosaur that lived during the late Jurassic Period (Kimmeridgian–Tithonian stages)….Giraffatitan.

Brontosaurus is a member of the family Diplodocidae, a clade of gigantic sauropod dinosaurs. The family includes some of the longest and largest creatures ever to walk the earth, including Diplodocus, Supersaurus, and Barosaurus.

Northern giraffe: 4.6 – 6.1 m

giraffe

Giraffes are friendly and social animals by nature. In the wild, they live in herds and spend their time traveling, eating and resting together. Not only do they enjoy being surrounded by other giraffes, they often enjoy the humans as well.

around six feet

calf

Cubs at Birth Tiger cubs are born blind and are completely dependent on their mother. Newborn tiger cubs weigh between 785 and 1,610 grams (1.75 to 3.5 lb). The tiger cubs’ eyes will open sometime between six to twelve days. However, they do not have their full vision for a couple of weeks.

14! Our tiger cubs have grown tremendously in just one year. All three cubs were born weighing less than 7 pounds each. Now, one year later, Kash weighs over 200 pounds, and both girls weigh around 170 pounds.

8 – 10 yearsIn the wild

Tigers have been known to live to the age of 26 in the wild. Female tigers give birth to two to four cubs at a time, on average, and can do so every two years. Survival is difficult for cubs; about half of all cubs do not live more than two years.