I am going to feed my snake on Wednesday for the first time here, it was eating live mice before coming here...I am not sure what size mouse to get for a 5 month old snake...I don't want to get a too small or too big mouse...and do I just throw it in the tank? How long can the mouse hang out in there if the snake doesn't eat right away...any help would be appreciated or links to good snake care sites...I was kind of thrown into this snake thing and I am determined to do a good job with it...