People aren't the only ones who perform better on tests or athletic events when they are just a little bit nervous -- dogs do too. But in dogs as in people, the right amount of stress depends on disposition.
A new study by researchers at Duke University finds that a little extra stress and stimulation makes hyper dogs crack under pressure but gives mellow dogs an edge.
The findings appear online in the journal Animal Cognition.
According to an idea in psychology called the Yerkes-Dodson law, a little stress can be a good thing, but only up to a point.