After Using Tools, Crows are Happier and Behave More Optimistically: "The pleasure of accomplishment"
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Oct 24 2021 at 10:46 PM GMT
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- 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.
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- Published Oct 24, 2021 10:46 PM GMT