Description : I ask because my dog is not interested in television at all. Not even Animal Planet or National Geographic Wild. :-) At the same time he is alert outside, hardly anything moves anywhere. He basically only has ... the TV and when he hears a dog barking from it, he runs to look in the garden. :-)
Last Answer : The dog certainly sees the image of the TV, but because the TV displays (simply, for ordinary LCD) 50 frames per second, the dog perceives its image as flickering - and yours, apparently, ... he perceives more sound reflection or he knows from experience that a more interesting dog is "outside".