To effect the sound good way the dog has to be at least 30-50lb of weight:)))) in some setups heavy weights on top of the speakers could help fighting vibrations and stabilise the speakers. Probably it could be useful if the speakers are too light or the floors are too curvy.
Something on top of a speaker=okay?
We have a (toy) stuffed dog laying on top of one of our floorstanding speakers. Does this affect the sound?
Do I need to find an identical breed of stuffed dog to put on the other speaker to maintain balance? Does it matter if it's a dog, an elephant or a cute bunny? What about the color? We can dye the dog's fur if that improves the soundstage.