Everywhere on the Internet says rough collies are very smart. I was looking to get a dog I can train to do obedience trials and contests. My mother, a vet, believes rough collies are dumb. She says that breeders over the years have "made their skull more narrow and less room for a brain." I can't find anything on the Internet to support collies are dumb, so I feel like I'm only getting one side of the story. Could anyone who's owned rough collies testify if they're highly trainable or no? Thank you!