Ulf

Ulf is the main protagonist of the Awfully Beastly Business book series.

An Awfully Beastly Business series
Ulf is a werewolf who lives under the protection of an organization to protect legendary beasts known as the RSPCB (Royal Society for the Prevention of Cruelty to Beasts) dedicated to the great scientist Professor Farraway. His friends include Tiana the fairy, Orson the giant, Druce the gargoyle, and Dr. Helen Fielding, the vet who raises him since he was a cub. Matching wits with the evil poacher Baron Marackai, Ulf goes on adventures throughout the series to protect mythical beings, including dragons, sea monsters, trolls, vampires, and even ghosts.

Trivia

 * Ulf probably comes from a word meaning "wolf."
 * The Awfully Beastly Business books were written by David Sinden, Matthew Morgan, and Guy Macdonald when they met at a university.
 * Ulf follows in Professor Farraway's footsteps when he rescues beasts from Baron Marackai and many other foes, like the wicked chef Franco Ravioli.