Stella in the TV Room

Here's a typical weekend afternoon. I'm switching between a football game and a rodeo. The dogs wander in to the TV room and Stella decides that bucking bulls are not allowed in her house.

She's the only one of the three who watch TV and react to it. The other day when I mentioned this to our vet, she said that this indicated that Stella was smarter than the other two.

I don't know how smart a dog is who thinks there's a bucking bull in the room with her. I'd be interested to hear from other dog (or cat?) owners about TV habits.