Illustration of a giraffe from Dictionnaire des Sciences Naturelles by Pierre Jean Francois Turpin (1840). Digitally enhanced…Free Image from public domain license
Frog by a Dandelion with Flies (1877–1938) by Jan van Oort. Original from The Rijksmuseum. Digitally enhanced by…Free Image from public domain license
Illustration of domestic cat on a stool and three playful kittens by Gottfried Mind (1768-1814). Original from Library of…Free Image from public domain license
Chimpanzee "Ham" during preflight activity with one of his handlers prior to the Mercury-Redstone 2 (MR-2) test flight which…Free Image from public domain license