This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
PZSLPage. Cercopithecus thiops thiops Linn Linnaeus en Young Grivet in London Zoo Proceedings of the Zoological Society of London org vol issue org page page Pocock text PDold PZSL Chlorocebus aethiops Mammals at London Zoo in London
Page 2023 Free-images.com. All images are Public Domain