The Red Kangaroo is the largest mammal living in Australia and the largest marsupial in the world. The Red Kangaroo male has red-brown fur; the female is smaller and faster than the male and it has blue-grey fur with a brown tinge. A red kangaroo can reach a speed of over 56 kilometers per hour. It can weigh up to 90 kg and 1.5 meters height. Find below a pictures gallery with the Red Kangaroo.

The Hippopotamus or Hippo lives in southern and eastern central sub-Saharan Africa. It’s the forth largest mammal in the world having a weight between 2,2 and 3,6 tones, the size of the head and body is between 2.8 and 4.2 m and the tail can reach 50 cm. The hippo’s diet is mainly herbivorous and it is a very good swimmer.The hippopotamus can be easily recognized by its enormous mouth and teeth, almost hairless body and short legs. Despite the fact it has short legs, the hippopotamus can easily overrun a human. Below you can find a pictures gallery with the enormous hippopotamus.

The Butterflyfish can be found on the reefs of the Pacific, Indian and Atlantic Oceans. There are approximately 114 species of butterflyfish. Their body is thin, disk-shaped and very colorful having striking backgrounds of red, orange, blue, or yellow.The Butterflyfish is about 20 cm and is omnivore. Below you can find a pictures gallery with the Butterflyfish.

The Beaver is one of the largest rodents on Earth and it lives in the forests from Asia, North America and Europe. It can change and manipulate its environment very easy. It’s diet consist in roots, leaves, twigs, bark and aquatic plants. There are two species of beavers: the North American Beaver and the European Beaver. Below you can find a pictures gallery with the both species of Beaver.

Beluga Whale also known as the White Whale lives in the Arctic Ocean. It can be easy recognized by its color and the prominent rounded forehead. The length of the Beluga Whale is about 5 m and it weighs somewhere between 900 and 1,300 kilos. Beluga Whale feeds on fish, worms and crustaceans. The female usually gives birth to one calf every 3 years and the gestation takes 12 to 14.5 months. Below you can find a pictures gallery with Beluga Whale.

The Starfish or the Sea Star is a marine animal which lives in all the world’s oceans reaching depth of over 6000 m. There are 2000 species of starfishes, most of them have 5 arms but there are also sea stars with 10, 20 or even 40 arms. A Starfish measures between 12 and 24 cm and can weigh up to 5 kg. The nervous system of the sea star is spread in its arms, it has no blood or brain. Find below a pictures gallery with the Starfish.

The Adélie Penguin lives on the Antarctic coast and together with the Emperor Penguin is one of the most southern seabirds. It weights 4-5.5 kg and it measures about 70 cm. The Adélie Penguin is a very good swimmer it can swim about 300 kilometers searching for food. What distinguish the Adélie Penguin from other species of penguins is the white ring around the eyes and the fact that it is smaller than other penguins. Below you can find a pictures gallery with the Adélie Penguin.

The Siberian Tiger lives mostly in the Eastern Russia but it also can be seen in North Korea or China. It is the largest wild cat in the world. The Siberian Tiger can reach up to 3.3 m and it weights about 300 kg. The sexual maturity is reached at the age of 4. The gestation takes approximately 3-3 and a half months. The female gives birth to 2-6 cubs which remain with their mother for 2-3 years. The cubs can’t hunt earlier than 18 months. Below you can find a pictures gallery with the great Siberian Tiger.

The American Alligator can be found in lakes, rivers and swamps in the southeastern United States. The body of the alligator is similar to a lizard with very powerful tail and jaws. It’s color is brown, olive, black, brown or gray and white underside. The American Alligator has no vocal cords and it eats fish, turtles, amphibians, birds, snakes and mammals. Below you can find a pictures gallery with the American Alligator.

The African Lion is the second largest cat after the tiger and is the only cat that lives in groups called prides. Today the African Lion can be found mainly in the south part of the Sahara desert. It weights between 120 and 191 kg and it can reach up to 2 meters without the tail. The female lion (lioness) is the primary hunter in the group. Find below a pictures gallery with the great African Lion.