Perry doesn't act like he's watching TV all the time, BUT if an animal appears for more than a few seconds, even if the sound is off or they haven't made a noise yet, you realize that he's been paying attention to it while he's been doing other things, the whole time.
He doesn't care about people on TV or most anything else - but animals that's when the attention peaks. If it's a program all about animals then he can sit there and stare for long periods of time. In the past he would pay attention to the dogs on TV (once he even ran outside - think he thought the TV was a window). Another time he would sit and watch the dogs (it was a show on rescue animals) but every time the capybara came on he would bark at it.
My husband and I were laughing at him yesterday... we were watching a documentary on Nat Geo... there were leopards, monkeys, antelope-like animals, some wolves. Perry's reaction seems to indicate that he finds some interesting and some (usually the predators) a little concerning. Those that are just interesting (antelope, some of the monkeys) would see him stopping what he was doing, ears perked up and attention was firmly on the TV (but still lying down)... the concerning ones (leopard, wolves) usually resulted in sitting up, staring intently at the TV AND, if they were fighting or growling or something, then some sort of whining sound from Perry (same reaction when the monkeys were fighting) and occasionally moving a little closer to my lap
. He clearly thought they were a threat.
So, I'm curious - do your dogs watch TV?