Francis Chai wasn't planning to get a dog until he saw his roommate's border collie and decided he wanted one as well.“I knew these dogs were very smart," Chai said, explaining why he was attracted to border collies.But what Chai did not know about border collies, at least not until he saw a program about them on television, is that the dogs were originally bred to herd sheep in the colder, rocky climates of England and Scotland.