![Your dog's genes, but not necessarily its breed, play a big role in its behavior](https://cdn.mos.cms.futurecdn.net/fwhbQdSp9TT6Uw6rriTEK9-1200-80.jpg)
Humans began selectively breeding dogs around 2,000 years ago, and these genes play a role in your pup's behavior, a new study of 4,000 purebred, …
* View the article originally published here. ** More curations: Al Cannistra at San Antonio ONE here.