Some people have a decidedly sunnier outlook on life than others who tend to expect the worst. Up until most of us have thought this is a human trait, but it turns out that dogs can also have a predisposition towards optimism or pessimism.
This new information comes from the University of Sydney, and started as a doggy personality test to determine the best service dogs for particular tasks. Dogs with a more pessimistic look on life tend to be more careful and reluctant to take risks – which makes them better guide dogs for the disabled.
Optimistic dogs are more persistent and tend to do better in, for instance, search-and-rescue settings where a pessimistic dog might give up. The optimistic dogs also recover quicker when something bad happens.