My BP used to strike at the live rats I fed her. I only fed her live rats a few times when I first got her, and ever since she eats them pre-killed. Someone on the forums, I forgot who, said that their snakes "mosy" up to their food. Well, that's what she does too when they're pre-killed.....except today! I was so shocked when she sprung (and missed) then sprung again!!
I always use hemostats to put the rat in the tank anyway, but I was pleasantly surprised to see a little instinct in her! Her last meal was not that long ago. I guess she simply decided to eat with a little gusto this time!