That guy is a pro!
Reminds me of a few years back when we had a menagerie. We had two 6 foot pythons who loved to eat rats. You had to watch your hands! Although that guy in the video is feeding them dead rats. They have to be trained to eat dead ones. We fed ours live rats. At first the rats had no idea what was going on. Once they figured it out, it was full panic mode.
But not for long.