Sharing the frisbee?

I was looking after Forrest over the weekend whilst my brother and his wife attended a wedding in Perth. 
Cooper and Forrest get on very well together but not sure how much sleep they get. They constantly have an eye on each other to ensure one is not getting something the other is not or more often catching the other unaware and taking the opportunity to take ownership of a toy.
On this occasion, Coopers skillful teasing soon resulted in a high speed chasing session.