https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13970690Edit ImageSaveSaveEditCropCustom TextA bull frog. Coloured etching by J. Heath, 1802.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 1200 x 857 px | 300 dpiLarge JPEG 3303 x 2360 px | 300 dpiFree DownloadA bull frog. Coloured etching by J. Heath, 1802.More