Rover is only interested in balls when they’re moving. When a ball stops I reach in to move it again, but he thinks hands are the origin of All Things Good and forgets about the ball when he sees my hand. So I got an automated ball.
Sadly this one moves out of Rover’s sphere of interest/good eyesight too quickly to entertain for long. And then this happened. Now he turns and walks away warily if he sees this thing. I guess the ball won the domination contest.