My dog hates it when I play online poker

[OrigamiSensei]

As someone else said, get a laptop and play on the couch.

It is also possible that something about the poker sound effects is upsetting your dog. Have you tried shutting the sound off and playing for a session? If the dog remains calm when the poker game is silent then go to the software forum and see if people have alternate sound mods that might not cause the problem.