A newly discovered canine skull dating back 33,000 years may be some of the earliest evidence for dog domestication ever found. The skull was unearthed in a cave in the Siberian Altai
mountains by an international team of Russian-led archaeologists.
The skull shows a mixture of traits seen in dogs and wolves. The snout is similar in size to early domesticated dogs in Greenland from around 1,000 years ago, but its large teeth are closer to those found in 31,000-year-old European wolves. The study, which was published in the journal PLoS One
, suggests that the newly found skull may be from a dog in the extremely early stages of domestication.