No, it's not that type of computer bug. As seen in this video, a real live praying mantis is doing what many housecats do – attacking a mouse cursor.
From the YouTube video description notes:
- The praying mantis is real, but it is hungry enough to try to catch and eat the cursor. He had been in the house for four days - prowling for insects around the ceilings.
- The mantis was patient enough that we were able to set up lighting - as long as we kept moving the mouse.
- (Notice how he keeps one foot on the top of the screen. Earlier he had tried to come down further, but skidded on the surface, and from then was more cautious).
- No insects, cursors or mice were harmed in the making of this movie. The mantis was returned to the wild.