I absolutely know nothing about rat behavior and have only fed live when I felt had no other choice. I honestly do not know how I could have prevented my occurrence short of restraining the rat. The rat was in with the snake for two seconds. Maybe the rat was just trying to figure out what the snake was. It was not an I am going to rip you to shreds attack. I personally am not for or against one way or the other. I try to do things the easiest way possible which for me means f/t. If my collection was as large as yours and I had my own rat colony I would feed live all the time for the only reason that it is more efficient to do so. All that said, if there is a methodology to reducing the possibility of this rat behavior I am always interested in learning new things and will try it out the next time I have to feed live.