A bare-chested man standing near a small waterfall. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3298590/free-photo-image-waterfall-animal-backFree Image from public domain licenseA Lion: A recumbent Lion (1788) print in high resolution by George Stubbs. Original from The Yale University Art Gallery.… https://www.rawpixel.com/image/3819799/illustration-image-art-vintageFree Image from public domain licenseFree elk with big horns in meadow during sunset photo, public domain animal CC0 image. https://www.rawpixel.com/image/5901818/photo-image-public-domain-nature-sunFree Image from public domain licenseBeautiful butterfly on white background. Free public domain CC0 image. https://www.rawpixel.com/image/6043540/photo-image-background-public-domain-blackFree Image from public domain licenseBlack bear with cubs by Neal Herbert. Original public domain image from Flickr https://www.rawpixel.com/image/4038655/photo-image-animal-public-domainFree Image from public domain licenseBeautiful butterfly on white background. Free public domain CC0 image. https://www.rawpixel.com/image/6043545/photo-image-background-public-domain-blueFree Image from public domain licenseMonarch butterfly and honeybee on purple coneflower. Original public domain image from Flickr https://www.rawpixel.com/image/4028731/photo-image-flower-plant-beeFree Image from public domain licenseOriginal public domain image from Flickr https://www.rawpixel.com/image/4027110/original-public-domain-image-from-flickrView licenseThe skeletal remains of a frog above a lake with water lilies. Etching. https://www.rawpixel.com/image/13965368/the-skeletal-remains-frog-above-lake-with-water-lilies-etchingFree Image from public domain licenseLesbia Amaryllis print in high resolution by John Gould (1804–1881) and Henry Constantine Richter (1821-1902). https://www.rawpixel.com/image/8229699/image-flowers-art-vintageFree Image from public domain licenseYellow WarblerA yellow warbler perches on a tree branch. Now is the perfect time to watch for warblers! We've been seeing a… https://www.rawpixel.com/image/4028828/photo-image-flower-plant-birdFree Image from public domain license