This is a white Bengal Tiger. The white ones are the result of genetics, just as some of us are blue-eyed and some brown. In the wild, however, white tigers are very rare. Possibly this could be because the mother, sensing the cubs are different and without the proper camouflage might starve, simply kills them. This is not unusual in nature.
This is a normal Bengal Tiger. The Bengals are almost all from India. Sadly they have been so heavily hunted that today there are more in captivity than in the wild.
This is Liger cub, a cross between a male Tiger and female Lion. In the wild they can never do this simply because thaty live on seperate continents.