Study: Tail Wag Direction Can Indicate Dog’s Mood
Friday, 01 November 2013 | by Pat's Picks

Which way a dog wags its tail can tell you if it’s in a good mood or a bad mood. The Pittsburgh Post Gazette says a new study finds dogs wag their tails to the right when they’re feeling positive emotions and to the left when they’re experiencing negative feelings. The study shows dogs, like humans, have asymmetrically organized brains.
SOURCE: Pittsburgh Post-Gazette