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Wild dogs that were less cautious around people than others may have began to live near humans, and natural selection would gradually produce "proto-dogs" from these animals that did not fear humans and could live in close proximity to them.
Indeed, today in several parts of the world dogs do live like this.
The remains of domestic dogs have been found in many archaeological sites in Arizona.
No evidence suggest that these dogs were killed or used for food.
500 - 750 Deep pithouses were developed, along with some above- ground rooms, surface storage pits and cists. Plain gray and some black-on-white pottery is made. Pottery includes corrugated gray, elaborate black-on-white, red and orange. 1350 - 1600 Typically, large pueblos are oriented on a central plaza. The number of Pueblos shrinks from the more than 100 observed in 1539 to 20.His love for humanity was greater than his bond for other creatures, he explained, and he willingly Forfeited his place in paradise to prove it.that lived on the fringes of human society scavenging scraps may be the ancestor of early dog breeds.These animals, which were already tame around humans, could be taken and used as hunting companions, or livestock guardians and different dog types likely evolved from these proto-dogs, not wolves.Artificial selection by humans also further shaped the evolution of the dog, as dogs with traits desired by humans would have been better cared for than others, and would have been more likely to survive and breed.