For years pedigrees have been bred right after racial standards. They must abide to certain external features and specific characteristics. And yet, each and every dog is an individual in features and behaviour. Within the same breed specific characteristics will surface more in a single dog than in an additional.
Formerly many dogs were helpful to work for us. In hunting the overall game was roused by a dog. Or a dog would chase a rabbit without treatment till in its burrow and retreive it to its owner. The farmer would take a major dog to accompany his herd on the cattle market. After the cattle ended up sold he would go home with all the dog beside him to protect the thick money bag.