Life expectancy and obedience
The analysis of the Canadians showed that dogs with a strong territorial drive use more calories than obedient dogs. This may explain their shorter life expectancy. According to the lead researcher the connection between a dog’s personality, its life expectancy and its calorie use has been scientifically determined.
It is thought that in the course of history different dog breeds have been bred mainly on the basis of their personality traits. But the genes that are responsible for certain personality traits may have also had an influence on the life expectancy and the calorie use of the animals.
The results of this study were published in the scientific journal The American Naturalist.