A male lion baring its teeth in an enclosure. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3304705/free-photo-image-dog-animal-animals-images-picturesFree Image from public domain licenseCopenhagen Zoo, Frederiksberg, Denmark. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3305248/free-photo-image-lion-and-lion-wildlife-animal-animals-images-picturesFree Image from public domain licenseA male lion sniffing a female lion near a rocky face. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3303526/free-photo-image-wild-cat-abyssinian-animalFree Image from public domain licenseFree cute lion sunbathing background, wildlife image, public domain CC0 photo. https://www.rawpixel.com/image/5904356/photo-image-face-public-domain-natureFree Image from public domain licenseFort Worth Zoo, Fort Worth, United States. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3300895/free-photo-image-wolf-animal-animals-images-picturesFree Image from public domain licenseZoological Society of London: a pair of white or silver lions. Coloured etching by W. Panormo. https://www.rawpixel.com/image/13952523/image-lion-art-animalFree Image from public domain licenseZoological Society of London: a pair of white or silver lions. Coloured etching by W. Panormo. https://www.rawpixel.com/image/13962348/image-dog-lion-artFree Image from public domain licenseA female lion sitting on a wooden structure in a zoo. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3300654/free-photo-image-tiger-zoo-animalFree Image from public domain licenseA male lion baring its teeth next to a rough rock on a savannah. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3282792/free-photo-image-animals-desert-public-domain-animalFree Image from public domain license Sea-lion sculptures in a pond at the St. Louis Zoo, sometimes called "America's Top Free Attraction"… https://www.rawpixel.com/image/8072253/photo-image-lion-plant-personFree Image from public domain licenseSide view of a sitting lion in black and white. Original public domain image from Flickr https://www.rawpixel.com/image/3583261/free-photo-image-animal-baboonFree Image from public domain licenseLion standing in the woods. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3293453/free-photo-image-lion-animal-cc0Free Image from public domain licenseA close up lion sitting on the ground at Phoenix Zoo, Phoenix, United States. Original public domain image from Wikimedia… https://www.rawpixel.com/image/3296905/free-photo-image-nature-lion-animalFree Image from public domain licenseLion lying down on stone in sunlight with brick wall behind. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3297194/free-photo-image-animal-zoo-animals-images-picturesFree Image from public domain licenseA Lion from the Menagerie of King Louis Napoleon, 1808 (1808) by Pieter Gerardus van Os https://www.rawpixel.com/image/13733401/image-lion-art-animalFree Image from public domain licenseThe Leopard, or Tree Tiger. (Felis Leopardus.) by Frank Haes https://www.rawpixel.com/image/14292776/the-leopard-tree-tiger-felis-leopardus-frank-haesFree Image from public domain licenseA lion yawning while lying down on grass ground. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3299073/free-photo-image-cat-wild-lionFree Image from public domain license