Despite the fact that domestic dog breeds change broadly—from very small Chihuahuas to large Fantastic Danes—all of them originate from precisely the same ancestors and share 99.9% in their DNA with the gray wolf. “Dogs were being domesticated from a lineage of grey wolves that are extinct,” Dr. vonHoldt claims. https://johnnyqrtun.fireblogz.com/67025181/5-simple-statements-about-pet-stress-reduction-explained