The Royal Bengal tiger.

The Bengal tiger (also known as the Royal Bengal tiger) is a subspecies of tiger, found across the Indian subcontinent. The Bengal tiger is the national animal of Bangladesh and is considered to be the second largest tiger in the world.

The Bengal tiger is the most numerous species of tiger in Asia and is found in dense forests and mangrove swamps and jungles throughout India, Bangladesh, Bhutan and Nepal, although the Bengal tiger's range today is much smaller than it once was.
The Bengal tiger is considered to be the second largest species of tiger, although recent reports suggest that the Bengal tiger is on average, larger than the Siberian tiger. The Bengal tiger has a yellow or light orange coat  with black or dark brown stripes and a white belly.
The white tiger is a Bengal tiger that has mutated genes, meaning that it is white in color with black stripes.

White elephant

The British East Africa Companycame to regard Uganda as a white elephant when internal conflict broke out in 1892 and rendered the company ineffective in administration of the territory.
A white elephant is an idiom for a valuable but burdensome possession of which its owner cannot dispose and whose cost (particularly cost of upkeep) is out of proportion to its usefulness or worth. The term derives from the story that the kings of Siam (now Thailand) were accustomed to make a present of one of these animals to courtiers who had rendered themselves obnoxious, in order to ruin the recipient by the cost of its maintenance. In modern usage, it is an object, scheme, business venture, facility, etc., considered without use or value.^[1]
Albino elephants exist in nature, usually being a reddish-brown or pink color.

Sew cows, Dugong.

Dugongs also known as sea cows .The dugong is a large marinemammal found in the warm waters surrounding Indonesia and Australia. Although the dugong can be found widely throughout the Indo-Pacific tropics, the highest population of the dugong is concentrated around northern Australia.

Although the dugong looks extremely similar to a manatee, the two are different species. The dugong and the manatee are very closely related and can look almost identical until you look at their tail. The tail of the dugong is typically forked like the tail of a shark, where the tail of the manatee is broad and flat, and slightly more flipper looking than fin looking.
Dugongs are smaller than manatees with the average adult dugong reaching lengths of around 3 meters and weigh nearly 400 kg, which is about the same as a large cow. The front flippers of the dugong can be as much as half a meter in length.

The fastest land snake in the world is the aggressive black mamba

The Black Mamba is considered to be the longest venomous of all snakes found around Africa. It is also considered to be one of the deadliest. It features a very powerful venom and that has many people running scared from it. They are  fast moving snakes and they are know to be aggressive and strike in a moments notice.
It is possible for this snake to be about 14 feet in length. However, it is quite thin with an overall size of about 3 ½ pounds. In spite of being so thin though they are very strong. This is also a very fast moving type of snake so don’t underestimate what you are dealing with.
You may be puzzled why they have such a name though as they aren’t black in color. Instead they are gray, olive, or brownish. The color will depend on the natural habitat of the species.

swifts are fastest flight speeds of any bird.

 The swift is a enigmatic little bird spends almost its entire life air borne. It medium-sized aerial bird, which is a superb flier. It evens sleeps on the wing! It is plain sooty brown, but in flight against the sky it appears black. It has long, scythe-like wings and a short, forked tail. A bird best identified by silhouette, the smudge-gray Chimney Swift nimbly maneuvers over rooftops, fields, and rivers to catch insects. Its tiny body, curving wings, and stiff, shallow wing beats give it a flight style as distinctive as its fluid, chattering call. This enigmatic little bird spends almost its entire life airborne. When it lands, it can’t perch—it clings to vertical walls inside chimneys or in hollow trees or caves. It is a summer visitor, breeding across the UK, but most numerously in the south and east.