Frog by a Dandelion with Flies (1877–1938) by Jan van Oort. Original from The Rijksmuseum. Digitally enhanced by… Frog by a Dandelion with Flies (1877–1938) by Jan van Oort. Original from The Rijksmuseum. Digitally enhanced by… Free from public domain license
Free
Frog on lotus leaf (1900 - 1930) by Ohara Koson (1877-1945). Original from The Rijksmuseum. Digitally enhanced by rawpixel. Frog on lotus leaf (1900 - 1930) by Ohara Koson (1877-1945). Original from The Rijksmuseum. Digitally enhanced by rawpixel. Free from public domain license
Free
1, 1a. Spotted Tree Frog (Hyla maculata); 2, 2a. Bengal Frog (Rana Bengalensis) from Illustrations of Indian zoology (1830… 1, 1a. Spotted Tree Frog (Hyla maculata); 2, 2a. Bengal Frog (Rana Bengalensis) from Illustrations of Indian zoology (1830… Free from public domain license
Free
Frog by anonymous (1560–1585). Original from The Rijksmuseum. Digitally enhanced by rawpixel. Frog by anonymous (1560–1585). Original from The Rijksmuseum. Digitally enhanced by rawpixel. Free from public domain license
Free
1. Keeled Nosed Toad (Bufo carinatus); 2, 2a. Doubtful Toad (Bufo dubius) from Illustrations of Indian zoology (1830-1834) by… 1. Keeled Nosed Toad (Bufo carinatus); 2, 2a. Doubtful Toad (Bufo dubius) from Illustrations of Indian zoology (1830-1834) by… Free from public domain license
Free
Bull Frog (Rana maxima) from The Natural History of Carolina, Florida, and the Bahama Islands (1754) by Mark Catesby (1683… Bull Frog (Rana maxima) from The Natural History of Carolina, Florida, and the Bahama Islands (1754) by Mark Catesby (1683… Free from public domain license
Free
Shrinking frog (Pseudis Merianae) and Black-spotted casque-headed tree (Trachycephalus geographieus) illustrated by Charles… Shrinking frog (Pseudis Merianae) and Black-spotted casque-headed tree (Trachycephalus geographieus) illustrated by Charles… Free from public domain license
Free
Shrinking frog (Pseudis Merianae) and Surinam toad (Pipa americana) illustrated by Charles Dessalines D' Orbigny (1806-1876).… Shrinking frog (Pseudis Merianae) and Surinam toad (Pipa americana) illustrated by Charles Dessalines D' Orbigny (1806-1876).… Free from public domain license
Free
Oval frog (Engystoma ovale) and Green toad (Bufo viridis) illustrated by Charles Dessalines D' Orbigny (1806-1876). Digitally… Oval frog (Engystoma ovale) and Green toad (Bufo viridis) illustrated by Charles Dessalines D' Orbigny (1806-1876). Digitally… Free from public domain license
Free
Collection of various reptiles from A history of the earth and animated nature (1820) by Oliver Goldsmith (1730-1774).… Collection of various reptiles from A history of the earth and animated nature (1820) by Oliver Goldsmith (1730-1774).… Free from public domain license
Free
Bull Frog (Rana maxima) from The natural history of Carolina, Florida, and the Bahama Islands (1754) by Mark Catesby (1683… Bull Frog (Rana maxima) from The natural history of Carolina, Florida, and the Bahama Islands (1754) by Mark Catesby (1683… Free from public domain license
Free