Werewolf

Werewolves were creatues that could shapeshift from humanoid form to that of a wolf, voluntarily or otherwise. We do not know their ultimate origin or even if the various werewolves found across the universe have any common link to each other.

History
There were several types of werewolf to be found in the universe. The Second Doctor encountered a werewolf in 3300 BC Italy. (DWY: Loop the Loup)

The Fourth Doctor, Sarah Jane Smith and Harry Sullivan encountered werewolves in World War II Germany. (PDA: Wolfsbane)

The Tenth Doctor and Rose Tyler encountered a Lupine Wavelength Haemovariform in 1879 Scotland. (DW: Tooth and Claw)

In 1903, after receiving a wealth of information from the future, Grigori Rasputin foresaw, among other things, werewolves. (CC: The Wanderer)

UNIT may possibly have fought werewolves before or at least know about them, given that by the 1990s their arsenal contained, amongst other exotic armaments, silver bullets. (DW: Battlefield)

The Fifth Doctor and Turlough encountered Earth-based werewolves in 21st century Brazil. (BFA: Loups-Garoux)

The Seventh Doctor and Ace met and befriended a Vulpanan werewolf named Mags in an era of space travel. Though good-natured, she had little control over her transformations. (DW: The Greatest Show in the Galaxy)

The Eighth Doctor, on a visit with Sam Jones to Saturnia Regina, encountered the Jax, a species thought extinct, who had in ancient times developed a virus controlled with technology that could turn people into werewolves. (EDA: Kursaal)

Werewolf-Like Creatures

 * The Daleks employed the Werelox. (DWM: The Dogs of Doom)
 * Stahlman's ooze transformed some humans into degenerated humanoid creatures, the Primords. (DW: Inferno)
 * Biological experimentation turned Yrcanos's faithful servant into a vulpine humanoid known as the Lukoser. (DW: Mindwarp)
 * Windigo are similar in biological concepts to Werewolves. (DWM: Bad Blood)