https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/14015733Edit ImageSaveSaveEditCropCustom TextFrogs conducting a duel: one frog has killed another with his sword, watched by their seconds. Photograph by J.P. Soule, 1876, after a drawing.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 1200 x 740 px | 300 dpiLarge JPEG 3500 x 2159 px | 300 dpiBest Quality JPEG 3941 x 2431 px | 300 dpiFree DownloadFrogs conducting a duel: one frog has killed another with his sword, watched by their seconds. Photograph by J.P. Soule, 1876, after a drawing.More