Text quoted from The New Discworld Companion.

Angua. Sergeant and chief tracker of the Ankh-Morpork City Watch. Her full name is Delphine Angua von Uberwald, and she is a werewolf. Her father (sire) is Baron Guye von Uberwald (also called Silvertail); her mother the Baroness was Mme Serafine Soxe-Bloonberg of Genua (also called Yellowfang). Angua had two brothers and a sister. Her sister Elsa was a yennork (she was always in human state) and was killed by their brother Wolfgang. Her other brother, Andrei, is a yennork who is always in wolf state. He was driven away by Wolfgang and currently lives as a champion sheepdog in Borogravia. Angua is a classic biomorph: for most of the month she is a well-developed girl with ash-blonde hair, and at full moon she is a werewolf, with blonde hair as long as a mane around her ears. She has a human intellect but with certain additional powers, such as the ability to smell colours and tear out a man's jugular vein.
     Angua has a long-term liaison with Captain Carrot Ironfoundersson, also of the Watch. Well, a bit more than just a liaison. It appears that Carrot, whose main hobby is ambling the byways of Ankh-Morpork on foot, has been more than happy to forgo the slight monthly dampener on the relationship in exchange for a girlfriend who is always ready for a nice long walk.