Four wolves in a gorge in the forest with a pit-trap: one wolf is about to fall into the pit while the other three are watching the bait, a sheep, deposited on a wheel above the trap. Etching by J.E. Ridinger.

Licence: Public Domain Mark

Credit: Four wolves in a gorge in the forest with a pit-trap: one wolf is about to fall into the pit while the other three are watching the bait, a sheep, deposited on a wheel above the trap. Etching by J.E. Ridinger. Wellcome Collection. Source: Wellcome Collection.