The Gnu is also called the Wildebeest and is known for its oxlike head, horns and shoulders, its bristly facial hair and mane.   Both sexes have have horns.

Although they appear menacing, they really aren't.   If you approached this Gnu, he'd prove it by going into antics like dashing off and and continually wheeling around to stare at you, a sure cause of snickers on the savannah.