Someday he'll figure it out.....

[chicot60]

http://i.imgur.com/MpZpKpQ.gif?1

[Raymond47]

I'm sure (I have 3) he figured it out the first time he rapped his head on the glass before it was removed (by whom?) or got yelled at for pawing the screen it there was one... Do not underestimate the working of the doggy crowd