Ring-Tailed Lemur

The Ring-tailed Lemur (Lemur catta) is a large strepsirrhine primate and the most recognized lemur due to its long, black and white ringed tail. It belongs to Lemuridae one of  four lemur families. It is the only member of the Lemur  genus

okapi

The okapi is a girrafid artiodactyl mammal.Okapis have reddish dark backs, with striking horizontal white stripes on the front and back legs, making them resemble zebras from a distance. These markings possibly help young follow their mothers through the dense rain forest and may also serve as camouflage.Okapis are herbivores

Gorilla

Gorillas are the largest of the primates. They are ground-dwelling and predominantly herbivorous.
The DNA of gorillas is highly similar to that of a human.
The closest relatives of gorillas are chimpanzees and humans

Giraffe

The giraffe (Giraffa camelopardalis) is an African even toed ungulate mammal, the tallest of all land-living , animal species and the largest ruminant.
The giraffe is one of only two living species of the family Giraffidae, along with the okapi

Lion

The lion (Panthera leo) is one of the four big cats in the genus panthera, and a member of the family Felidae
Lions spend much of their time resting and are inactive for about 20 hours per day. Although lions can be active at any time, their activity generally peaks after dusk with a period of socializing, grooming, and defecating. Intermittent bursts of activity follow through the night hours until dawn, when hunting most often takes place. They spend an average of two hours a day walking and 50 minutes eating.

Tiger

The word "tiger" is taken from the Greek word "tigris", which is possibly derived from a persian source meaning "arrow"The tiger (Panthera tigris), a member of the felidae family.
Tigers have a lifespan of 10–15 years in the wild, but can live longer than 20 years in captivity

Zebra

There are three species of zebra: the plains zebra, grevys zebra and the mountain zebra

Bears

Bears are mammals of the family Ursidae.
Common characteristics of modern bears include a large body with stocky legs, a long snout, shaggy hair, plantigrade paws with five nonretractile claws, and a short tail.

Bison

Bison have a fairly simple diet. The bison's main food is grass.
Their most obvious weapons are the horns borne by both males and females.
Members of the genus Bison are large even toedungulates within the subfamily Bovine

crocodile

Crocodiles are ambush hunters, waiting for fish or land animals to come close, then rushing out to attack. As cold-blooded predators, they have a very slow metabolism , and thus can survive long periods without food.
 A crocodile is any species belonging to the family Crocodylidae. 
Member species of the family Crocodylidae are large aquatic  reptiles