Otherwise known as a wildebeest, gnus are generally graceful and quiet creatures, seemingly contrary to their name. Usually living near water, gnus need to drink every couple of days and often hang around zebras since gnus usually have a taste for the grass that zebras leave behind when feeding. These mammals have unique features such as their mane, horns, stripes, and coloring. Both males and females share these traits. Their mane is made up of a coarse, stiff hair while their horns curve, slightly resembling parentheses. Their stripes may help them to blend in with a herd of zebra and their coloring varies depending on their age. Gnus are very cooperative animals and fend off prey by traveling in a herd. Even at night, gnus take turns keeping watch for predators.