Replying to 3D tv and dogs...

So we recently got a 3d tv at my house (claim) and we have 2 dogs who have never payed attention to the tv unless there's a dog in the movie and it barks or something. 1 dog is retarded and blind but the other one is fine, it chases laser lights and stuff (dunno if that has anything to do with it) but for the 2 weeks or so we've had the tv we've never tried the 3d, last night I watched tintin 3d with my lil brothers and the non blind dog went fucking crazy, trying to jump on the screen and barking and shit... Anyone know what's going on?