Throughout my entire veterinary career, I have maintained that my patients had right or left handed preferences. Subtle observations of preferences or behaviors during my exams suggested to me that, like us, each side of their brain dominated different activities. This week's issue of the The Economist describes studies by Italian scientists that demonstrate the direction of tail wagging is determined by whether a situation was pleasant or unpleasant.
To Dogs, Left Is Sinister
Two years ago Giorgio Vallortigara and his group at the University of Trento in Italy demonstrated that dogs wagged their tails to the right when greeted by their masters. The same dogs wagged their tails to the left when encountering an unknown dominant dog. Left unanswered by this early study was whether the right or left signal was meaningful to other dogs.
In the new study, Vallortigara and colleagues used electrodes to monitor the heart rates of dogs subjectedRead More »from Is Your Pet a Lefty or a Righty?