–and went down as a werewolf landed on his back.
Angua drooled. The hair along her spine stood out like a saw blade. Her lips curled back like a wave. Her growl was from the back of a haunted cave. All together, these told the brain of anything monkey-shaped that movement meant death. And that stillness, while it also meant death, didn’t mean immediate, this actual second, death, and was therefore the smart-monkey option.

– Sometimes the watcher of the watchmen needs help |
Terry Pratchett, Thud!