live. peanut eats live, bubba eats dead... well, bubba doesnt eat, but when he does he eats pre-killed.

i like feeding peanut live, he's a very good predator. never had a problem at all, and the only meal he ever skipped was when i switched his cage to a 10 gallon for a couple weeks when i got bubba. if i offer him something dead, he doesnt even acknowledge the fact that it's food. he just slithers on about his merry way.