Indian Gaur

The gaur ( Bos gaurus) is the largest of the wild cattle found in India. It is an impressive animal standing 64 to 72 inches in its stockings. The gaur reaches a length of 11 to 12 feet, which includes about 3 feet of tail. Bull can weigh upto 800 kilos.

The adult gaur bull is shiny black in colour has white stockings, a grey boss between its horns and is rusty coloured on the insides of its thighs and forelegs. A dorsal ridge terminates near the middle of its back. A large dewlap that drops down between the forelegs along with a smaller one below the chin gives the gaur bull a most impressive profile.
Young bulls and cows are dark brown. Cows have smaller dorsal ridges and their dewlaps are not prominent. Young calves are light brown in colour and lack the characteristic white stockings which appear after approximately three months

source: http://www.greenleaveshabitat.com/normalwildlifespoting.htm