https://www.usa.gov/copyrighted-government-workshttps://www.rawpixel.com/image/4029003Edit ImageSaveSaveEditCropCustom TextNorthern water snakeA northern water snake enjoys the sun at Port Louisa National Wildlife Refuge in Iowa after emerging from its winter den.Photo by Jessica Bolser/USFWS. Original public domain image from FlickrMorePublic DomainFree CCO U.S. Government image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 1200 x 837 px | 300 dpiLarge JPEG 1728 x 1205 px | 300 dpiFree DownloadNorthern water snakeA northern water snake enjoys the sun at Port Louisa National Wildlife Refuge in Iowa after emerging from its winter den.Photo by Jessica Bolser/USFWS. Original public domain image from FlickrMore