It could have been any number of factors. Too big and not thawed out enough definitely come to mind as well as stress. I would definitely wait a couple of days. When is your next scheduled feeding day? Almost at the bottom of the first page of this thread Tigergenesis gave a great way to thaw rodents. You might wanna check it out: http://www.ball-pythons.net/index.ph...ewtopic&t=4929