When running off they usually go in single file, as Jan had represented.
Old bulls hang between the rear of the herd and the hunter; and these caper back and forward, butting each other with their horns, and often fighting apparently in serious earnest! Before the hunter comes within range, however, they drop their conflict and gallop out of his way.
Nothing can exceed the capricious antics which these animals indulge in, while trooping over the plain.
There is a second species of the same genus common in South Africa, and a third inhabits still farther to the north; but of the last very little is known.

Both species are larger than the wildebeest, individuals of either being nearly five feet in height, while the common gnoo is scarce four.
The three kinds are quite distinct, and never herd together, though each of them is often found in company with other animals.

All three are peculiar to the continent of Africa, and are not found elsewhere.
The "brindled gnoo" (_Catoblepas gorgon_) is the other species that inhabits the South of Africa.

It is known among the hunters and colonists as "blauw wildebeest" (blue wild-ox).

It is of a bluish colour--hence the name, and "brindled," or striped along the sides.