Golden Mantella (2013) by Smithsonian Institution. Original from Smithsonian's National Zoo. Digitally enhanced by rawpixel. https://www.rawpixel.com/image/3060038/free-photo-image-frog-amazing-animalFree Image from public domain licenseNorthern Leopard FrogPhoto by Grayson Smith/USFWS. Original public domain image from Flickr https://www.rawpixel.com/image/4029149/photo-image-nature-animalFree Image from public domain licenseNorthern Leopard FrogPhoto by Grayson Smith/USFWS. Original public domain image from Flickr https://www.rawpixel.com/image/4028578/photo-image-nature-animalFree Image from public domain license