We got rid of our cable because we just weren't watching tv anymore and when we did watch something it was almost always on Netflix. But I have played a few of their sample stuff from YouTube on my Apple TV and my dog watched it LOL... But he likes watching tv, I watched animal odd couples on Netflix and he literally watched the entire thing!
I could see it maybe being nice for a dog with bad separation anxiety and maybe just having it on while you're away at work or something.
Ollie vom Grunenfeld HIC CGC