The term "alpha male" was coined around the 1930s. People mainly say that an American biologist, David Mech, made the term popular. Later on, in 1970, he published a book [The Wolf: Ecology and Behavior of an Endangered Species] and explained the “alpha wolf” concept. Initially, he thought that alpha wolves became top dogs for winning fights. But he later found that alpha wolves are actually the father of the pack. He gets the position when he mates and breeds a family of cubs.