https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13996685Edit ImageSaveSaveEditCropCustom TextA lead dog is sniffing the ground before a tree to which it is tied to with a leash. Etching by J. E. Ridinger.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 1007 x 1200 px | 300 dpiLarge JPEG 1339 x 1596 px | 300 dpiFree DownloadA lead dog is sniffing the ground before a tree to which it is tied to with a leash. Etching by J. E. Ridinger.More