It has been about 5 days since I last fed my G. pulchra sling. The first time I fed it I had to pre-kill the prey and leave it overnight for the sling to take it. I figured I would try live prey this time. So I put the prey in front of the sling, and waited. For about 20 seconds nothing happened. Then, almost faster than I could see, the sling struck and took the prey. I nearly jumped I was so surprised. Pure awesome!