Some mysteries remain about why dogs wag their tails
Wagging is a form of communication, but scientists know little about its evolution
![A yellow lab lies on a sidewalk, its head cocked in a friendly way, and its tail mid wag.](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2024/01/011624_jc_tail-wagging_feat.jpg?fit=1030%2C580&ssl=1)
Tail wagging is ubiquitous among dogs. Surprisingly, the behavior is still mysterious in some ways.
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