Anybody else's snakes decide that they don't need to actually kill their live food?

One of my babies just ate his rat crawler while it was still alive - He did constrict it, but the thing was still kickin and squeeking all the way down the hatch. And it went down butt first.

He's not the only one - my Pueblan will eat anything - and doesn't bother to wait for her live stuff to die before eating it - butt first. Every time.

I think its slightly amusing(obviously not for the rat), but I'm also concerned that once they start eating prey large enough to actually fight back - If I can't get them switched over to f/t, will they learn to kill it properly? I don't want their INSIDES to possibly get cut open and..yeah :/