Frustrated Squirrels Go Nuts Over Nuts

PBS Digital Studios' "Deep Look" series explores the amusing way fox squirrels use their bushy tails to express frustration and other emotions.

"Humans aren’t the only creatures that get frustrated. Squirrels do too. One researcher wants to know, could there be an evolutionary benefit to losing your cool?" (read the full article)

Previously: Lizards Play Rock-Paper-Scissors to Find a Mate