Scientists discovered certain traits in dogs, like aggression and obedience/train ability is shared through genetics. Researchers 101 different dog breeds. They looked for similar genetic traits with breeds that share common behavior personality traits. Researchers asked dog owners to rate their dogs based on different behaviors. Scientist scored each breed on fourteen different behaviors. They then compared the different genetic similarities between breeds. They found that genes contributed to sixty to seventy percent in train-ability and aggression. Border Collies scored high in train ability and chihuahua scored high in aggression. Researchers also found genes contributed to fifty percent in fearfulness and energy. It was concluded that no single gene determines a dog's behavior. A dog's behavior is determined by environmental factors and a combination of multiple genes.
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