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Self-Controlled Crows Ace the Marshmallow Test

Self-Controlled Crows Ace the Marshmallow Test

Are four treats better than two? Not if you're a crow picking a favorite snack. Crows and ravens hold off on gobbling a tidbit when they can see a better one coming after a short wait.

March 10, 2014 — Jyoti Madhusoodanan

Crows take a look in the mirror

One question in an animal cognition is whether animals other than humans have the ability to recognise themselves. A classic way of testing this, established in 1970 by Gordon Gallup, is the `mirror test'.

September 20, 2011 — Felicity Muth