That is such a great photo of Buster and his Pointer obsession!
My dog is a self confessed ball-a-holic. He will carry his ball around the house. Push it into people's hands until they play with him and he's even sneaked it out of the house when we go out for walkies around the block (I noticed he was carrying it ten minutes into the walk).
If the ball is out of reach, he will sit and stare just like Buster does with the pointer, and occasionally glance at one of his humans as if to say 'hey, the ball is there, can you not see it? How about a good game of fetch?'
He has even been seen falling asleep with the ball in his mouth :-)