As the wild ancestors of dogs consumed their prey, they ate the plants still contained in the stomach and intestines. (boyetteanimalhospital.com)
All of these breeds showed the closest genetic relationship to the wolf ancestors of dogs, said the researchers. (hhmi.org)
Although humans first began to domesticate early ancestors of dogs about thirty thousand years ago, it wasn't until the 1880s that the first flea and tick treatments were developed at about the same time as the rabies vaccine, allowing dogs to move closer to our human packs. (cesarsway.com)