NEW YORK — The way Fido wags his tail might reveal more about him than you know.
A few years ago, researchers discovered a 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 goes left when it sees something negative, like an unfamiliar dominant dog.
Now, 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. Experts say the tail-wagging difference appears to be one way that dogs gauge how other dogs will respond to them.
“It’s just fascinating that dogs pick up on it,” said Evan MacLean, co-director of Duke University’s Canine Cognition Center. For humans, he said, “it’s a difficult thing to see.”
The study appears in the journal Current Biology.
