We enjoyed watching the National Dog Show on Thanksgiving. Hugo enjoyed it most of all. Oscar never notices what is on TV but Hugo is very aware. I'm not sure why some dogs watch tv and some don't. Popular Science says it has to do with refresh rate and a dog's temperment. This article says it has to do with a dog's retina, which might explain the difference between Oscar and Hugo. Another article says dogs just see the movement and not the subject. I disagree with this because Hugo definitely notices the difference between people and animals on TV.
Hugo will sit and watch TV like a person. He especially goes crazy when there another dog or animal on TV. He watched each and every dog show contestant trot across the screen with a critical eye.