By Peter Reuell, Harvard Gazette It’s no secret crows are smart. They’re notorious for frustrating attempts to keep them from tearing into garbage cans; more telling, however, is that they are one of the few animals known to make tools. But would you believe doing it actually makes them happy? That’s the finding of a […]
The post After Using Tools, Crows are Happier and Behave More Optimistically: ‘The pleasure of accomplishment’ appeared first on Good News Network.
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