Tail Wagging - Ahwatukee Foothills News: Home

Tail Wagging

In this 2012 image provided by the Department of Veterinary Medicine, University of Bari, a dog, bottom right, watches a video of the silhouette of another dog wagging its tail to its left. At top right is an inset image of the dog's heart rate while the dog was watching the video. A few years ago, researchers discovered a subtle difference in how dogs wag their tails. When a dog sees something positive, such as its owner, it tends to wags its tail more to its right. The wagging tends to go left when it sees something negative, like an unfamiliar dominant dog. In the Thursday, Oct. 31, 2013 issue of the journal Current Biology, the same Italian researchers report that other dogs pick up on that difference, and it’s reflected in their behavior and even their heart rates. (AP Photo/Department of Veterinary Medicine, University of Bari)

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