Every household dog, from a towering Great Dane to a trembling toy breed, traces back to wild wolves. New genetic work shows ...

Wolf DNA seems to have influenced the size, smelling power and even personality of modern dog breeds, scientists said.

On average, terriers, gundogs, and scent hounds have the least wolf ancestry. While some large guardian dogs have high wolf ancestry, others including the Neapolitan mastiff, bullmastiff, and the St.

While the expansion of gray and Mexican gray wolf populations is often hailed as a conservation success, the consequences for ranching families can be gruesome, costly and complex - threatening the ...