Dissections of two animal stomachs: one ruminant, the other non-ruminant. Etching, 1823. https://www.rawpixel.com/image/13990773/image-cartoon-art-clothingFree Image from public domain license
16.09.2022 – vizita de lucru la azilul de câini fără adăpost „AOVA”16.09.2022 – vizita de lucru la azilul de câini fără… https://www.rawpixel.com/image/9654099/photo-image-dog-person-animalFree Image from public domain license
Northern CardinalPhoto by Grayson Smith/USFWS. Original public domain image from Flickr https://www.rawpixel.com/image/4028395/photo-image-bird-natureFree Image from public domain license
A dissection of the ear: seven figures. Engraving, ca. 1780. https://www.rawpixel.com/image/13998901/dissection-the-ear-seven-figures-engraving-ca-1780Free Image from public domain license
Caprimulgus Ruficollis, print in high resolution by John Gould (1804–1881) and Henry Constantine Richter (1821-1902). https://www.rawpixel.com/image/8229596/image-art-vintage-public-domainFree Image from public domain license
Midland Painted TurtlePhoto by Grayson Smith/USFWS. Original public domain image from Flickr https://www.rawpixel.com/image/4028577/photo-image-nature-animalFree Image from public domain license
Dark-eyed JuncoPhoto by Grayson Smith/USFWS. Original public domain image from Flickr https://www.rawpixel.com/image/4028392/photo-image-bird-nature-iceFree Image from public domain license
Free painted redstart bird on branch image, public domain animal CC0 photo. https://www.rawpixel.com/image/5917838/image-background-public-domain-natureFree Image from public domain license
Five snakes of the cobra family, one a coral snake eating a lizard. Engraving, ca. 1778. https://www.rawpixel.com/image/13959004/image-paper-cartoon-artFree Image from public domain license
Above, a marine mollusc divulging a fish; below, a marine mollusc divulging a fish. Coloured etching. https://www.rawpixel.com/image/13963600/image-art-sea-animalFree Image from public domain license
Common LoonPhoto by Grayson Smith/USFWS. Original public domain image from Flickr https://www.rawpixel.com/image/4028406/photo-image-bird-nature-waterFree Image from public domain license
Original public domain image from Flickr https://www.rawpixel.com/image/4027110/original-public-domain-image-from-flickrView license
Monarch butterfly sipping nectar from alfalfaPhoto by Courtney Celley/USFWS. Original public domain image from Flickr https://www.rawpixel.com/image/4028819/photo-image-flower-plant-beeFree Image from public domain license
Tiger swallowtailTiger swallowtail on a thistle. Photo by Rick Hansen/USFWS. Original public domain image from Flickr https://www.rawpixel.com/image/4029097/photo-image-flower-plant-butterflyFree Image from public domain license
Monarch Butterfly on Butterfly MilkweedPhoto by Mara Koenig/USFWS. Original public domain image from Flickr https://www.rawpixel.com/image/4028884/photo-image-flower-plant-beeFree Image from public domain license
BobolinkWatch for bobolinks perched on stems in fields and meadows. This one was spotted in Hillsdale County, Michigan.Photo… https://www.rawpixel.com/image/4028838/photo-image-plant-bird-summerFree Image from public domain license
Northern cardinalWe spotted this vibrant male northern cardinal stop by for a quick drink at the bird bath.Photo by Courtney… https://www.rawpixel.com/image/4028672/photo-image-plant-leaf-birdFree Image from public domain license
Hooded Owlet Moth CaterpillarThese colorful caterpillars have a striking yellow, red and black pattern. They can often be… https://www.rawpixel.com/image/4028863/photo-image-plant-leaf-summerFree Image from public domain license
Scallop shell on the sands.Scallop is a common name that is primarily applied to any one of numerous species of saltwater… https://www.rawpixel.com/image/4023519/photo-image-nature-beachFree Image from public domain license
Grotesque Chinese mythological animals, one of them a kilin, another a boar. Woodcut by a Chinese printmaker. https://www.rawpixel.com/image/13972107/image-background-paper-cartoonFree Image from public domain license
Grapes in vineyard, natural background. Original public domain image from Flickr https://www.rawpixel.com/image/3261500/free-photo-image-vineyard-vine-animalFree Image from public domain license
Dissected right knee joint from a case of intermuscular synovial cyst https://www.rawpixel.com/image/14014101/dissected-right-knee-joint-from-case-intermuscular-synovial-cystFree Image from public domain license
Song sparrow perched in a treePhoto by Courtney Celley/USFWS. Original public domain image from Flickr https://www.rawpixel.com/image/4028988/photo-image-tree-plant-birdFree Image from public domain license
The racing King Salvator, mile record, 1:35 12: by Prince Charlie, dam Salina by Lexington (1828) by Currier & Ives. https://www.rawpixel.com/image/8650325/image-art-vintage-public-domainFree Image from public domain license