When humans see a dog wagging its tail, we pretty much equate that with a happy dog. It turns out that a dog's tail may be much more expressive than we realize. Research has shown that happy dogs tend to wag more to the right, while anxious dogs go more to the left. A new study published in the journal Current Biology delves into the question of whether other dogs read this response.
This asymmetry of wagging is traced back to left- and right-brain action. Researchers showed dogs videos of other dogs, or silhouettes of dogs wagging their tails, with a preference in one direction or another. The viewing dogs had their heart rates measured and were monitored for their responses.… Read more