I tend to like herding dogs and herding dog mixes (such as gsd mixes that are longhaired, border collie mixes, corgi and aussie mixes, etc). But I've seen gorgeous huskies, dobermans, etc. It really depends on the dog though and it depends on what the person likes. I don't think there is a prettiest dog though because each person has his or her own likes, so in their eyes their dog is the prettiest but other people like their own dogs.