The Tiger of Ryōkoku from the series True Scenes by Hirokage (1860) by Utagawa Hirokage. Original from The MET Museum.… Free Image from public domain license 
Cranes from Momoyogusa–Flowers of a Hundred Generations (1909) by Kamisaka Sekka. Original from the The New York Public… Free Image from public domain license 
Pappagallo detto arara rossa del Brasile (Macaw) by Saverio Manetti (1723–1785). Original from The Beinecke Rare Book &… Free Image from public domain license 
Common and Golden Carp (1935) by Ohara Koson. Original from the Los Angeles County Museum of Art. Digitally enhanced by… Free Image from public domain license 
Trochilidae–Kolibris from Kunstformen der Natur (1904) by Ernst Haeckel. Original from Library of Congress. Digitally… Free Image from public domain license 
Mixed flying butterflies vintage illustration, remix from original artwork Free Image from public domain license 
Deer from Momoyogusa–Flowers of a Hundred Generations (1909) by Kamisaka Sekka. Original from the The New York Public… Free Image from public domain license 
Les Chiens Coiffés (ca. 1825) lithographed by A. Cheyère. Original from The MET Museum. Digitally enhanced by… Free Image from public domain license 
Colombes et lis, étoffe imprimée from L'animal dans la décoration (1897) illustrated by Maurice Pillard… Free Image from public domain license 
Promethea Silkmoth - Female (Attacus Promethia) from Moths and Butterflies of the United States (1900) by Sherman F. Denton… Free Image from public domain license 
Illustrations from the book European Butterflies and Moths by William Forsell Kirby (1882), a kaleidoscope of fluttering… Free Image from public domain license 
Cat with Tomato Plant (1931) print in high resolution by Hiroaki Takahashi. Original from The Los Angeles County Museum of… Free Image from public domain license 
Black Cat Hissing 20th century print in high resolution by Hiroaki Takahashi. Original from The Los Angeles County Museum of… Free Image from public domain license 
Decorative design with two fish in a hexagon (1876–1924) painting in high resolution by Gerrit Willem Dijsselhof.… Free Image from public domain license 
Aquarium with three North Sea fish: Lobster, Dogfish and Plaice (ca.1876–1924) painting in high resolution by Gerrit… Free Image from public domain license 
Fight between a Tiger and a Buffalo (1908) by Henri Rousseau.. Original from The Cleveland Museum of Art. Digitally enhanced… Free Image from public domain license 
The Repast of the Lion (1907) by Henri Rousseau. Original from The MET Museum. Digitally enhanced by rawpixel. Free Image from public domain license 
Greyhound (1912) print in high resolution by Moriz Jung. Original from the MET Museum. Digitally enhanced by rawpixel. Free Image from public domain license 
Pauw met kippen (1878–1910) print in high resolution by Theo van Hoytema. Original from The Rijksmuseum. Digitally… Free Image from public domain license 
Bulldog (1912) print in high resolution by Moriz Jung. Original from the MET Museum. Digitally enhanced by rawpixel. Free Image from public domain license 
Pitbull Terrier (1912) print in high resolution by Moriz Jung. Original from the MET Museum. Digitally enhanced by rawpixel. Free Image from public domain license 
Sortilèges: Evening dress, de Beer (1922) fashion illustration in high resolution by George Barbier. Original from The… Free Image from public domain license 
Blossoming Cherry on a Moonlit Night (ca. 1932) by Ohara Koson (1877–1945). Original from the Los Angeles County Museum… Free Image from public domain license 
L'Arbre de science: Robe du soir de Doeuillet (1914) fashion illustration in high resolution by George Barbier. Original from… Free Image from public domain license 
Woman holding cats (1898) print in high resolution by Edward Penfield. Original from The New York Public Library. Digitally… Free Image from public domain license 
Ascidiae–Seescheiden from Kunstformen der Natur (1904) by Ernst Haeckel. Original from Library of Congress. Digitally… Free Image from public domain license 
Young Woman with Ibis (ca. 1860–1862) painting in high resolution by Edgar Degas. Original from The MET Museum.… Free Image from public domain license 
Bloodless Giraffe Hunt (Unblutige Jagd auf Giraffen) (1911) print in high resolution by Moriz Jung. Original from the MET… Free Image from public domain license 
Cerfs et arbres, papier peint. Écureuil oiseaux et sorbier, bordure from L'animal dans la décoration (1897)… Free Image from public domain license 
Greyhound (1912) print in high resolution by Moriz Jung. Original from the MET Museum. Digitally enhanced by rawpixel. Free Image from public domain license 
Terrestrial Mollusk, Poppy Anemone, and Crane Fly from Mira Calligraphiae Monumenta or The Model Book of Calligraphy… Free Image from public domain license 
Bird with Plum Blossoms (18th Century) painting in high resolution by Zhang Ruoai. Original from The Cleveland Museum of Art.… Free Image from public domain license 
Orchideae–Denusblumen / A. Giltsch, gem from Kunstformen der Natur (1904) by Ernst Haeckel. Original from Library of… Free Image from public domain license 
Le Gout des Laques (1920) fashion illustration in high resolution by George Barbier. Original from The Beinecke Rare Book &… Free Image from public domain license 
Kerstnacht (1894) print in high resolution by Theo van Hoytema. Original from The Rijksmuseum. Digitally enhanced by… Free Image from public domain license 
Butterfly, Caterpillar, Moth, Insects, and Currants (1650–1655) painting in high resolution by Jan van Kessel. Original… Free Image from public domain license 
Chiarini's Circus (Sekai daiichi charine daikyokuba) (1886) by Utagawa Masanobu. Original from The MET Museum. Digitally… Free Image from public domain license 
Guide for Constructing the Letter R from Mira Calligraphiae Monumenta or The Model Book of Calligraphy (1561–1596) by… Free Image from public domain license 
Fly, Caterpillar, Pear, and Centipede from Mira Calligraphiae Monumenta or The Model Book of Calligraphy (1561–1596) by… Free Image from public domain license 
Cats under a tree (1898) print in high resolution by Edward Penfield. Original from The New York Public Library. Digitally… Free Image from public domain license 
Orangutan (Orangoetan) (1914) print in high resolution by Samuel Jessurun de Mesquita. Original from The Rijksmuseum.… Free Image from public domain license 
Leptomedusae–Faltenquallen from Kunstformen der Natur (1904) by Ernst Haeckel. Original from Library of Congress.… Free Image from public domain license 
Siphonophorae–Staatsquallen from Kunstformen der Natur (1904) by Ernst Haeckel. Original from Library of Congress.… Free Image from public domain license 
Cygne sauvage from L'animal dans la décoration (1897) illustrated by Maurice Pillard Verneuil. Original from the The… Free Image from public domain license 
Ara (c.1926) print in high resolution by Samuel Jessurun de Mesquita. Original from The Rijksmuseum. Digitally enhanced by… Free Image from public domain license 
Oiseaux. Libellules. Mouches. Chauve-souris. Écureuils et noisettes. Cygnes, bordures from L'animal dans la… Free Image from public domain license 
Horned owl (Hoornuil) (1915) print in high resolution by Samuel Jessurun de Mesquita. Original from The Rijksmuseum.… Free Image from public domain license 
Insects, Butterflies, and a Grasshopper during 17th century painting in high resolution by Jan van Kessel. Original from The… Free Image from public domain license 
White Chinese Geese Swimming by Reeds by (1928) Ohara Koson. Original from the Los Angeles County Museum of Art. Digitally… Free Image from public domain license 
Thalamophora–Kammerlinge from Kunstformen der Natur (1904) by Ernst Haeckel. Original from Library of Congress.… Free Image from public domain license 
Goshawk on Snow-covered Pine Bough by Ohara Koson (1877–1945). Original from the Los Angeles County Museum of Art.… Free Image from public domain license 
Discomedusae–Schweibenquallen from Kunstformen der Natur (1904) Ernst Haeckel. Original from Library of Congress.… Free Image from public domain license 
Vijf ooievaars in een wei (ca. 1878–1917) print in high resolution by Theo van Hoytema. Original from The Rijksmuseum.… Free Image from public domain license 
Stephoidea–Ringelstrahlinge from Kunstformen der Natur (1904) by Ernst Haeckel. Original from Library of Congress.… Free Image from public domain license 
Antilopina–Antilopen from Kunstformen der Natur (1904) by Ernst Haeckel. Original from Library of Congress. Digitally… Free Image from public domain license 
Egrets and Reeds in Moonlight (1926) by Ohara Koson. Original from the Los Angeles County Museum of Art. Digitally enhanced… Free Image from public domain license 
Asteridea–Seesterne from Kunstformen der Natur (1904) by Ernst Haeckel. Original from Library of Congress. Digitally… Free Image from public domain license 
Twee zilverreigers (1878–1905) print in high resolution by Theo van Hoytema. Original from The Rijksmuseum. Digitally… Free Image from public domain license 
Couple in a carriage (ca.1902) print in high resolution by Edward Penfield. Original from Library of Congress. Digitally… Free Image from public domain license 
Roodborstje op besneeuwde boomtak (1878–1910) print in high resolution by Theo van Hoytema. Original from The… Free Image from public domain license