According to Jenner’s note under the video the snake is called Julius, and they have to make sure the doors in the house remain locked so he can’t terrorize the neighbours. The notes also say he switched the light on before opening the door, there’s no evidence of that in the clip but I’m still scared. Here’s Julius:
I find this video creepier than I thought I would, maybe it’s the dull thud as his huge body hits the floor or the fact that snakes are clearly growing more intelligent by the hour. I thought snakes were supposed to be pretty dim? Obviously I have underestimated them big time. We are all in a lot of trouble if they decide to turn.