gray ratsnake (Pantherophis spiloides)
Wonders of Wildlife: Gray Rat Snake
Pantherophis spiloides - by t7iguy - JungleDragon
Gray Ratsnake, Reptiles & Amphibians in Ontario
How to Recognize an Eastern Ratsnake - Have you Seen a Pinesnake?
Eastern Ratsnake Vermont Fish & Wildlife Department
Gray Ratsnake, Snake Removal
Gray Ratsnake – Florida Snake ID Guide
Gray ratsnake (Elaphe spiloides) COSEWIC assessment and status report
Maryland Biodiversity Project - Eastern Ratsnake (Pantherophis alleghaniensis)
Gray Ratsnake State of Tennessee, Wildlife Resources Agency
Grey ratsnake - Zoo Ecomuseum
Gray ratsnake - Wikipedia