I got my first dog in 1970 and have had one most of the time every since. He is the first one that I’ve had that pays attention to the tv. Some times he will just sit on the couch and watch for awhile. His head will go back and forth as he is following the action on the tv. I dont know if he would try to get inside the screen or not. Luckily my tv sits high enough off the floor that he cant reach it.My wife's siamese cat is also fascinated with tv, especially those crazy cat food commercials. The stupid cat tries to get inside the screen, pawing at the figures on tv. I would guess it's pretty common animal behavior.