Or the turtle ...

Here we have the cat on the treadmill.

I've only had one child use the treadmill, ever. I thought I was seeing things when it happened. I paused the game and went back to look again. lol I've never been able to get another child (<14) to use it.

First dad wants to walk on it, then son climbs on behind dad and runs,and the dog sits behind them.

The cat will also do so! Had husband,wife and cat combo also.

Yeah, the treadmill is definitely not limited to one person. They can also run or walk at the same time on it!

Oh, the son was over 14, but it would be nice if the dog or cat would walk or run too instead of sitting,it rather ruins the effect!

I'd love to see the pets sit on it and slide off or something That would be hilarious!