The skeleton of a hedgehog, lizard, bat, frog, crocodile and dog. Engraving. https://www.rawpixel.com/image/14018671/the-skeleton-hedgehog-lizard-bat-frog-crocodile-and-dog-engravingFree Image from public domain licenseAmerican Jack : the Frog Man... : American Museum, 8 Catherine Street, Strand, W.C. : manager: M. Pollock. https://www.rawpixel.com/image/14000839/image-paper-cartoon-faceFree Image from public domain licenseA sick frog is administered an enema by one of his companions; other frogs, some anthropomorphised, some not, stand by.… https://www.rawpixel.com/image/14000957/image-horse-cartoon-personFree Image from public domain licenseA heron with a frog in its beak is standing on the shore of a lake; illustration of a fable. Etching. https://www.rawpixel.com/image/14017194/image-dog-cartoon-artFree Image from public domain licenseNatuurhistorische ensemble (nr. 9) (1596 - 1610) by Elias Verhulst, Anselmus Boëtius de Boodt and Jacob Hoefnagel https://www.rawpixel.com/image/13795090/image-paper-frame-artFree Image from public domain licenseSkeleton and dissection of a frog, the latter showing the internal organs. Line engraving after a drawing by S. Edwards … https://www.rawpixel.com/image/13981430/image-paper-cartoon-artFree Image from public domain licenseA frog is sitting under rushes in a bog facing a fox and surrounded by other animals; illustration of a fable. Etching by J.… https://www.rawpixel.com/image/13982889/image-paper-horse-cartoonFree Image from public domain licenseDe haas en de kikvorschen (1890) by Gaston Gélibert, Monogrammist VDH and Albert Quantin https://www.rawpixel.com/image/13780407/image-paper-cartoon-artFree Image from public domain licenseA parody astrological diagram showing opposing aspects of the life of settlers in Jamaica: langorous noons and the hells of… https://www.rawpixel.com/image/13972200/image-cartoon-person-crossFree Image from public domain licenseAaron points his rod at the river and it begins to flow with frogs. Etching. https://www.rawpixel.com/image/13998378/aaron-points-his-rod-the-river-and-begins-flow-with-frogs-etchingFree Image from public domain licenseAarde (1560 - 1600) by Johann Sadeler I, Maerten de Vos and Johann Sadeler I https://www.rawpixel.com/image/13783551/aarde-1560-1600-johann-sadeler-maerten-vos-and-johann-sadelerFree Image from public domain licenseHistoria naturalis ranarum nostratium in qua omnes earum proprietates, praesertim quae ad generalionem ipsarum pertinent… https://www.rawpixel.com/image/14011740/image-cartoon-plant-artFree Image from public domain licenseDe Voorstelling (1787) by Johann Heinrich Ramberg and Thomas Harmar https://www.rawpixel.com/image/13784637/voorstelling-1787-johann-heinrich-ramberg-and-thomas-harmarFree Image from public domain licenseWaterloze schelp (1821) by Katsushika Hokusai, Tsuru no Hinako and Haikai Utaba https://www.rawpixel.com/image/13767169/waterloze-schelp-1821-katsushika-hokusai-tsuru-hinako-and-haikai-utabaFree Image from public domain licenseA contortionist wearing a frog costume, in several poses. Process print, 190-. https://www.rawpixel.com/image/13982024/contortionist-wearing-frog-costume-several-poses-process-print-190Free Image from public domain licenseDe kikvorsch, die zoo dik wil zijn als de os (1888) by Godefroy, Gillot and Albert Quantin https://www.rawpixel.com/image/13780316/image-paper-cartoon-faceFree Image from public domain licenseA ghost emerging from a hole in the ground; fish, sirens and a frog with a crown in the border. Etching by C.H. Schmidt… https://www.rawpixel.com/image/14005756/image-border-face-frameFree Image from public domain licenseThe head of a frog, in the fourth stage of a physiognomic metamorphosis into an ideal head of Apollo. Coloured drawing by… https://www.rawpixel.com/image/13976336/image-face-frame-artFree Image from public domain licenseHollanders willen het achterwerk van Napoleon kussen, 1811 (1811) by William Elmes and Thomas Tegg https://www.rawpixel.com/image/13765836/image-dog-paper-cartoonFree Image from public domain licenseHistoria naturalis ranarum nostratium in qua omnes earum proprietates, praesertim quae ad generalionem ipsarum pertinent… https://www.rawpixel.com/image/13975259/image-cartoon-art-animalFree Image from public domain licenseEnkele reptielen en amfibieën op een oever (after 1598 - 1618) by Adriaen Collaert, Adriaen Collaert and Adriaen Collaert https://www.rawpixel.com/image/13779071/image-paper-person-artFree Image from public domain licenseA Chinese sage, accompanied by his young assistant, blesses a frog. Painting by a Chinese artist. https://www.rawpixel.com/image/13972608/image-cartoon-face-personFree Image from public domain licenseHistoria naturalis ranarum nostratium in qua omnes earum proprietates, praesertim quae ad generalionem ipsarum pertinent… https://www.rawpixel.com/image/13992221/image-cartoon-art-animalFree Image from public domain licenseTwelve stages in the sequence from the head of a frog to the head of a primitive man. Coloured etchings by Christian von… https://www.rawpixel.com/image/13985317/image-face-person-artFree Image from public domain licenseScenes from the life of Moses before the Exodus. Etching, 1799. https://www.rawpixel.com/image/13982346/scenes-from-the-life-moses-before-the-exodus-etching-1799Free Image from public domain licenseFrogs: eleven figures showing the skeleton, circulatory system, and stages of development of the frog. Chromolithograph by… https://www.rawpixel.com/image/13981673/image-paper-cartoon-faceFree Image from public domain licenseNerves of the neck and chest: six figures including a dissected human neck and chest, details of fine structures, and the… https://www.rawpixel.com/image/13998514/image-paper-cartoon-plantFree Image from public domain licenseThe Frog Pond - Spring Evening by Alfred Booth and Thomas E Jevons https://www.rawpixel.com/image/14319745/the-frog-pond-spring-evening-alfred-booth-and-thomas-jevonsFree Image from public domain licenseA female figure with a castle on her head measures a globe with a compass; representing geometry. Engraving by A. Vallée… https://www.rawpixel.com/image/14007305/image-cartoon-face-personFree Image from public domain licenseNapoleon stuurt Lodewijk Napoleon als koning in de vorm van een ooievaar naar Holland, 1806 (1806) by Samuel Knight and… https://www.rawpixel.com/image/13782769/image-paper-cartoon-faceFree Image from public domain licenseHet openen van de sluizen, 1799 (1799) by John Cawse and Samuel W Fores https://www.rawpixel.com/image/13766418/het-openen-van-sluizen-1799-1799-john-cawse-and-samuel-foresFree Image from public domain licenseHorses' hooves, seen from below: four figures showing both perfect and contracted feet, demonstrating Mr. Coleman's… https://www.rawpixel.com/image/13982451/image-paper-horses-artFree Image from public domain licenseA battle between frogs and mice (Batrachomyomachia): a kite descends and kills the combatants. Etching. https://www.rawpixel.com/image/14000904/image-dog-cartoon-personFree Image from public domain licenseA large ox is looking down on a frog climbing out of a pond; illustration of a fable by Aesop. Etching. https://www.rawpixel.com/image/13988053/image-paper-cartoon-artFree Image from public domain licenseHistoria naturalis ranarum nostratium in qua omnes earum proprietates, praesertim quae ad generalionem ipsarum pertinent… https://www.rawpixel.com/image/14015374/image-paper-cartoon-plantFree Image from public domain licenseBrain of a frog: figure showing a section of the brain. Watercolour, possibly by D. Gascoigne Lillie, ca 1906. https://www.rawpixel.com/image/13981293/image-paper-cartoon-personFree Image from public domain licenseGalvanism: 25 figures illustrating experiments and instruments, including the galvanism of a frog's legs and a cow's head… https://www.rawpixel.com/image/13999060/image-paper-cartoon-cowsFree Image from public domain licenseSpotprent op de terugkeer van de prins, 1799 (1799) by James Gillray and Hannah Humphrey https://www.rawpixel.com/image/13783221/image-paper-cartoon-faceFree Image from public domain licenseA tortoise is surrounded by frogs on the shore of a lake in which eels are devouring other frogs. Etching by W. Hollar for a… https://www.rawpixel.com/image/14010351/image-cloud-cartoon-plantFree Image from public domain licenseDichter in tuin met vrouw en kind (1786 - 1787) by Kitao Masanobu, Tsutaya Juzaburo Koshodo and Ichikawa Danjûrô V https://www.rawpixel.com/image/13770588/image-paper-face-personFree Image from public domain licenseVangen van kikkers (1730) by Bernard Picart and Bernard Picart https://www.rawpixel.com/image/13761008/vangen-van-kikkers-1730-bernard-picart-and-bernard-picartFree Image from public domain licenseSpotprent op het verwerpen van de prins, 1799 (1799) by John Cawse, F Sansom and Samuel W Fores https://www.rawpixel.com/image/13782748/image-paper-cartoon-faceFree Image from public domain licenseThe Entente Cordiale: Marianne (a woman representing France) is chasing away a frog on which is written "Anglophobia"; King… https://www.rawpixel.com/image/14007215/image-background-cartoon-faceFree Image from public domain licenseThe head of a frog, in the early stages of a physiognomic metamorphosis into an ideal head of Apollo. Coloured drawing by… https://www.rawpixel.com/image/13984385/image-paper-face-frameFree Image from public domain licensePlaag van de kikkers (1645 - 1646) by Christoffel van Sichem II, Christoffel van Sichem III and Pieter Jacobsz Paets https://www.rawpixel.com/image/13775407/image-paper-cartoon-faceFree Image from public domain licenseTwo spectacle-shaped portraits of a politician and a statesman are arranged over a woman scattering valuables over a crowd… https://www.rawpixel.com/image/14003067/image-cartoon-face-frameFree Image from public domain licenseA contortionist wearing a frog costume, in several poses. Process print, 190-. https://www.rawpixel.com/image/14005902/contortionist-wearing-frog-costume-several-poses-process-print-190Free Image from public domain licenseExperiments on the section of the glosso-pharyngeal and hypoglossal nerves of the frog and observations of the alterations… https://www.rawpixel.com/image/14019161/image-paper-cartoon-artFree Image from public domain licenseA bird of prey prepares to swoop on a mouse and a frog in water; illustrating Aesop's fable of the frog and the mouse.… https://www.rawpixel.com/image/13994230/image-paper-cartoon-personFree Image from public domain licenseThe head of Apollo, his physiognomy having metamorphosed from that of a frog. Coloured drawing by J.C. Lavater, 179-. https://www.rawpixel.com/image/14006302/image-face-frame-personFree Image from public domain licenseElectricity: electrical equipment, batteries, etc., and frogs' legs. Engraving, 18--, by Cooper. https://www.rawpixel.com/image/14005854/image-paper-cartoon-personFree Image from public domain licenseA woman with a bird on her head; representing dialectic. Engraving by A. Vallée after M. de Vos. https://www.rawpixel.com/image/14016060/image-cartoon-person-artFree Image from public domain licenseSpotprent op de paniek onder de patriotten na het herstel van stadhouder Willem V, 1787 (1787) by James Gillray and Samuel W… https://www.rawpixel.com/image/13782746/image-paper-cartoon-faceFree Image from public domain licenseAn old man discourses with a woman with a bird on her head; representing dialectic. Engraving by C. Cort, 1565, after F.… https://www.rawpixel.com/image/13992145/image-cartoon-face-personFree Image from public domain licenseDe tweede plaag van Egypte (1755 - 1779) by Kaiserlich Franziskische Akademie, anonymous and Jozef II Duits keizer https://www.rawpixel.com/image/13774118/image-paper-cartoon-frameFree Image from public domain licenseTwo bulls fighting by a pond sending frogs leaping into the water. Etching by W.-S. Howitt, ca 1800. https://www.rawpixel.com/image/13986623/image-dog-cartoon-artFree Image from public domain licenseOno no Tofu and the Frog (c. 1758) by Torii Kiyohiro, anonymous and Marusho https://www.rawpixel.com/image/13774191/ono-tofu-and-the-frog-c-1758-torii-kiyohiro-anonymous-and-marushoFree Image from public domain licenseDe Repetitie (1787) by Johann Heinrich Ramberg and Thomas Harmar https://www.rawpixel.com/image/13763874/repetitie-1787-johann-heinrich-ramberg-and-thomas-harmarFree Image from public domain licenseDe Voorstelling (1787) by Johann Heinrich Ramberg and Thomas Harmar https://www.rawpixel.com/image/13785362/voorstelling-1787-johann-heinrich-ramberg-and-thomas-harmarFree Image from public domain licenseDe Repetitie (1787) by Johann Heinrich Ramberg and Thomas Harmar https://www.rawpixel.com/image/13784295/repetitie-1787-johann-heinrich-ramberg-and-thomas-harmarFree Image from public domain licenseFrog and tadpoles (1900 - 1930) by Ohara Koson (1877-1945). Original from The Rijksmuseum. Digitally enhanced by rawpixel. https://www.rawpixel.com/image/436543/free-illustration-image-frog-japanese-art-ohara-kosonFree Image from public domain licenseFishing Frog or Angler from The Natural History of British Fishes (1802) by Edward Donovan. Original from the New York… https://www.rawpixel.com/image/431402/free-illustration-image-colorful-fish-animals-seaFree Image from public domain licenseStork and a frog (1688-1698) by Johan Teyler (1648-1709). Original from The Rijksmuseum. Digitally enhanced by rawpixel. https://www.rawpixel.com/image/514882/free-illustration-image-frog-stork-art-1600s-antique-cc0Free Image from public domain licenseSmooth blenny from The Natural History of British Fishes (1802) by Edward Donovan. Original from the New York Public… https://www.rawpixel.com/image/431242/free-illustration-image-vintage-sea-life-unique-artwork-1800s-public-domainFree Image from public domain license