The emperor penguin is the tallest and heaviest of all living penguin species and is endemic to Antarctica. The male and female are similar in plumage and size, reaching 100 cm in length and weighing from 22 to 45 kg.

There are many tiny shrews, but this pipsqueak takes the cake as the smallest. The Etruscan shrew is the smallest mammal in the world by mass. On average, it weighs less than . 14 ounces and has a body length of about 1.57 inches.

The Cheetah is the fastest animal in the world, it's capable of going from 0 to 60 miles per hour in less than three seconds, the cheetah is considered the fastest land animal, though it is able to maintain such speeds only for short distances.

Sloths are the slowest animals in the world. They also happen to be the cutest animals. Sloths are so slow that their name itself means sluggishness or laziness. The top speed of a sloth is 0.003 miles per hour.

Chimpanzees are thought to be the most-intelligent animals on the planet, chimps can manipulate the environment and their surroundings to help themselves and their community.