Angua von Überwald - City Watch Ankh-Morpork, Discworld

Delphine Angua von Überwald, usually just known as Angua is the first werewolf in the Ankh-Morpork City Watch, hired under Lord Vetinari's "special hiring procedures", at the same time as Detritus (a troll) and Cuddy (a dwarf). Now a captain (promoted from Sergeant by the time of I Shall Wear Midnight), Angua has a reliable nose and can track any thief, killer, or miscellaneous miscreants. In wolf form, the sense of smell of a werewolf takes the driving seat and the smells in the environment are mapped onto the mind as a human would perceive different colored lights by the sense of sight. For species that a werewolf is familiar with (humans, dwarfs, wolves, dogs...), a werewolf can also distinguish strong emotions (fear, worry, etc.) and know what gender the person is by smell. Angua, therefore, often goes plainclothes to a crime scene to get a sniff.