After Using Tools, Crows are Happier and Behave More Optimistically: "The pleasure of accomplishment"

Published Oct 24 2021 at 10:46 PM GMT
  • 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.



  • Published Oct 24, 2021 10:46 PM GMT