Wolf is a name with a split personality. It can be seen as one of the fierce animal names, like Fox and Bear and Puma, with a touch of the werewolf, or it can be viewed as a quieter, Wolf Blitzer kind of name, fairly common in German (where is pronounced Vulf) and Jewish families, sometimes as a short form of Wolfgang.
CNN newscaster Blitzer inherited the name from his grandfather. Other Wolfs of note include British screenwriter Wolf Mankowitz, who was instrumental in the early James Bond films, painter Wolf Kahn, and the hero of Jack London's 1904 novel The Sea-Wolf, Wolf Larsen.
Spelling variation Wolfe pushes it into surname territory, while nickname Wolfie definitely domesticates it.