Area where the snake bit your pet. How to Treat a Snake Bite on a Dog. Lay or sit down with the bite in a neutral position of comfort. Severe, immediate pain with rapid swelling. close menu, William H. Blahd Jr. MD, FACEP - Emergency Medicine, Sean P. Bush MD, FACEP - Emergency Medicine, Envenomation Specialist, Whoops, something went wrong with access to our non-public page. Remove rings and watches in anticipation of swelling. Mark the leading edge of tenderness/swelling on the skin and write the time alongside it. Rattlesnakes. It is important to remember that a snake only injects part of its venom with each bite, so it can still hurt you after the first strike.