Bones of the shoulder, arm and hand: four figures. Lithograph by Martelli after Squanquerillo, ca. 1838. https://www.rawpixel.com/image/14017763/image-paper-cartoon-cowFree Image from public domain licenseLithe and Graceful - Dancing Joshua by Louis Fleckenstein https://www.rawpixel.com/image/14275515/lithe-and-graceful-dancing-joshua-louis-fleckensteinFree Image from public domain licenseA winged figure carrying witches and monsters through the air. Etching by F. Goya, 1796/1798. https://www.rawpixel.com/image/14003554/image-face-frame-personFree Image from public domain licenseBeautiful butterfly on white background. Free public domain CC0 image. https://www.rawpixel.com/image/6043534/photo-image-background-public-domain-blueFree Image from public domain licenseSaint Antony Abbot: his tormenting by devils. Engraving after J. Callot, 1635. https://www.rawpixel.com/image/13978388/saint-antony-abbot-his-tormenting-devils-engraving-after-callot-1635Free Image from public domain licenseBreve e sustantiale trattato intorno alle figure anathomiche delli più principali animali terestri, aquatili, et volatili /… https://www.rawpixel.com/image/13958395/image-cartoon-skeleton-animalFree Image from public domain licenseMonarch caterpillar on common milkweed in MinnesotaPhoto by Joanna Gilkeson. Original public domain image from Flickr https://www.rawpixel.com/image/4029061/photo-image-plant-green-leafFree Image from public domain licenseBison wallowing in Norris Campground by Diane Renkin. Original public domain image from Flickr https://www.rawpixel.com/image/4039058/photo-image-tree-plant-natureFree Image from public domain licenseConcord, New Hampshire Granite Co. Quarries by Howard A Kimball https://www.rawpixel.com/image/14295435/concord-new-hampshire-granite-co-quarries-howard-kimballFree Image from public domain licenseTwo tigers in a mountainous landscape, one is devouring its prey while the other one is resting on a rock. Etching by J. E.… https://www.rawpixel.com/image/13981804/image-cartoon-tigers-artFree Image from public domain licenseAn APHIS Veterinarian inspecting cow on a farm in Maryland.USDA photo by R. Anson Eaglin https://www.rawpixel.com/image/9653947/image-cow-person-animalFree Image from public domain licenseIndigo BuntingPhoto by Courtney Celley/USFWS. Original public domain image from Flickr https://www.rawpixel.com/image/4028421/photo-image-plant-bird-natureFree Image from public domain licenseMonarch caterpillar on common milkweedPhoto by Courtney Celley/USFWS. Original public domain image from Flickr https://www.rawpixel.com/image/4028228/photo-image-plant-bee-leafFree Image from public domain licenseElephants at a Zoo. Original image from Carol M. Highsmith’s America, Library of Congress collection. Digitally… https://www.rawpixel.com/image/3094724/free-photo-image-america-animal-bathingFree Image from public domain licenseTractatus de corde. Item de motu & colore sanguinis et chyli in eum transitu ... / [Richard Lower]. https://www.rawpixel.com/image/14002051/image-paper-plant-artFree Image from public domain licenseGrisley [sic] Giant, Mariposa Grove, Yo Semite Valley. by Charles Bierstadt https://www.rawpixel.com/image/14288227/grisley-sic-giant-mariposa-grove-semite-valley-charles-bierstadtFree Image from public domain licenseChlaenis alternatus (top view)NPS / Christine MireUSA: Montana, Park CountyYellowstone NP GARD BasinPitfall Trap Ele.… https://www.rawpixel.com/image/4038128/photo-image-animal-public-domainFree Image from public domain licenseA newborn calf at Southern Mountian Creamery cleans her nose in Middleton, Md., June 17, 2014. Original public domain image… https://www.rawpixel.com/image/3315531/free-photo-image-cow-livestock-calfFree Image from public domain licenseBears 482 and 435 families gather the confluence of the Brooks River and Naknek Lake https://www.rawpixel.com/image/4031549/photo-image-plant-bird-elephantFree Image from public domain licenseBull bison grazing in Gardner Canyon by Jacob W. Frank. Original public domain image from Flickr https://www.rawpixel.com/image/4038798/photo-image-animal-public-domainFree Image from public domain licenseSchelpen, turritella terebra (A) en turritella duplicata (B) (1644 - 1652) by Wenceslaus Hollar https://www.rawpixel.com/image/13760498/image-paper-person-animalFree Image from public domain licenseEnsatina eschscholtzii (commonly known by its genus name, Ensatina). The ensatina can usually be found under logs or brush… https://www.rawpixel.com/image/3394441/free-photo-image-animal-cc0-creative-commonsFree Image from public domain licensePortrait of the Count-Duke of Olivarez by Nicolaas Henneman https://www.rawpixel.com/image/14322917/portrait-the-count-duke-olivarez-nicolaas-hennemanFree Image from public domain license