http://www.livescience.com/44072-garter-snake.html http://www.livescience.com/44072-garter-snake.html http://www.livescience.com/44072-garter-snake.html it can cause itching or minor swelling in humans http://www.livescience.com/44072-garter-snake.html http://www.livescience.com/44072-garter-snake.html http://www.livescience.com/44072-garter-snake.html http://www.livescience.com/44072-garter-snake.html Live Science http://www.livescience.com/44072-garter-snake.html http://www.livescience.com/44072-garter-snake.html http://www.livescience.com/44072-garter-snake.html http://www.livescience.com/44072-garter-snake.html http://www.livescience.com/44072-garter-snake.html http://www.livescience.com/44072-garter-snake.html http://www.livescience.com/44072-garter-snake.html http://www.livescience.com/44072-garter-snake.html http://www.livescience.com/44072-garter-snake.html wide spread http://www.livescience.com/44072-garter-snake.html http://www.livescience.com/44072-garter-snake.html www.livescience.com/44072-garter-snake