Skull of a three-year-old brown bear: four figures, showing the skull and jaw-bones. Etching, 1840/1870. https://www.rawpixel.com/image/14016177/image-paper-cartoon-cowFree Image from public domain license
Global warming badge, animal endangerment photo in blob shape https://www.rawpixel.com/image/6631257/image-nature-circle-fireView license
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Skull of a cow, Jean Bernard vintage illustration https://www.rawpixel.com/image/6684139/skull-cow-jean-bernard-vintage-illustrationView license
Offer van Kaïn en Abel (1583) by Johann Sadeler I, Maerten de Vos, Johann Sadeler I, Johann Sadeler I and Johann Sadeler I https://www.rawpixel.com/image/13769522/image-paper-cow-plantFree Image from public domain license
Global warming badge, animal endangerment photo in hexagon shape https://www.rawpixel.com/image/6631309/image-nature-fire-hexagonView license
Beenderen van een os (1809 - 1810) by Anthonie van den Bos and Hendrik Hoogers https://www.rawpixel.com/image/13776907/beenderen-van-een-1809-1810-anthonie-van-den-bos-and-hendrik-hoogersFree Image from public domain license
Four écorché figures, showing the deep muscles of the axial skeleton (torso), hands and feet. Crayon manner print by J.… https://www.rawpixel.com/image/13992477/image-paper-cartoon-cowFree Image from public domain license
Animal extinction badge, longhorn skull on desert photo in blob shape https://www.rawpixel.com/image/6650265/image-nature-circle-animalView license
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Skull of a cow vintage illustration on torn paper https://www.rawpixel.com/image/6738996/skull-cow-vintage-illustration-torn-paperView license
Cow diagram illustration, black and white drawing. Free public domain CC0 image. https://www.rawpixel.com/image/6770653/image-public-domain-black-illustrationFree Image from public domain license
Animal extinction badge, longhorn skull on desert photo in round shape https://www.rawpixel.com/image/6651432/image-nature-circle-animalView license
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 license
Sheep skull from The History and Antiquities of the Deanery of Craven in the County of York (1805) published by Thomas… https://www.rawpixel.com/image/571384/skull-with-antlersFree Image from public domain license