Your pet dog really does have wolf genes

Chihuahuas have about 0.2 percent wolf ancestry, according to a new study. Breakthroughs, discoveries, and DIY tips sent every weekday. While that chihuahua might seem about as similar to a wolf as a shrub is to a mighty redwood tree, some small breeds like the tiny, big-eared chihuahua have some wolf ancestry. New research published today in the journal (), finds that the majority of dogs living today have low but detectable levels of post-domestication wolf ancestry. These genes have likely helped shape multiple characteristics, including personality traits, sense of smell, and body size.