https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/14006715
A dog sits on a grinder's cart, surrounded by a group of dogs looking up in reverence. Wood engraving by R.L. after E. Landseer, 1875.
Original public domain image from Wellcome Collection
Public DomainFree CC0 image for Personal and Business use