Fox by Jean Bernard (1775-1883). Original from The Rijksmuseum. Digitally enhanced by rawpixel. https://www.rawpixel.com/image/481395/free-illustration-image-fox-public-domain-creatureFree Image from public domain licenseMountain fox published by William Blackwood & Sons (1840). Original from the British Library. Digitally enhanced by rawpixel. https://www.rawpixel.com/image/572709/mountain-fox-vintage-drawingFree Image from public domain license165. Horned Lark (Alauda cornuta) 166. Fox-colored Sparrow (Fringilla iliaca) illustration from Zoology of New York… https://www.rawpixel.com/image/329324/free-illustration-image-fox-sparrow-larkFree Image from public domain licenseCur fox published by William Blackwood & Sons (1840). Original from the British Library. Digitally enhanced by rawpixel. https://www.rawpixel.com/image/572625/cur-fox-vintage-drawingFree Image from public domain licenseMountain fox published by William Blackwood & Sons (1840). Original from the British Library. Digitally enhanced by rawpixel. https://www.rawpixel.com/image/572483/mountain-fox-vintage-drawingFree Image from public domain license