THE STORY OF THE YAK. 
197 
flight at a gallop, with their heads down and their tails in the air. A 
wounded yak, whether cow or bull, will not infrequently charge. 
The most distinctive peculiarity of the yak is the mass of long hair with 
which the flanks, limbs and tail are clothed, and which makes the general 
appearance of the animal so very different from that of other oxen. On 
the head and upper-parts of the body the hair is short and nearly smooth, 
and the long hair only commences on the lower part of the sides where it 
BLACK AND WHITE YAK OF THIBET. 
forms a fringe of great depth, extending forwards across the shoulders and 
backwards onto' the thighs. On the tail the long hair is developed on the 
lower half, where it expands into an enormous tuft which does not generally 
reach below the hocks. There is also a tuft of long hair on the breast. The 
color of the hair is a uniform dark blackish brown, sometimes tending to a 
rusty tint on the flanks and back, and with a gray grizzle on the upper part 
