According to a new study, dog personalities change over time, just like personalities change in humans. In the largest study of dog personality ever conducted, researchers analyzed over 1,600 dogs from 50 different breeds.
The researchers found that the old adage that you can’t teach an old dog new tricks does have some basis in reality, with older animals being harder to train once they are set in their ways. But what was particularly interesting to the scientists was how the personalities of dogs tended to follow that of their owners.
And sure enough, personalities of dogs tended to follow the changes in personalities of their owners. Active and outgoing people tend to have dogs that are the same -- and dogs that are anxious tend to have owners that are more negative.