When they’re threatened by a predator, fox squirrels whip their tails in an s-shaped pattern to look big and fearsome. Researchers wondered what else they can learn from watching squirrels flag their tails. For instance, do they get frustrated, the way that people do? Find out in #DeepLook's full video, "Watch These Frustrated Squirrels Go Nuts!" 👉 https://www.facebook.com/watch/?v=185344155738049 | Deep Look • PBS

1.3M views · 10K reactions | Nutty Challenge Accepted: Hope you're not too greedy, Mrs. Squirrel. Can you handle nuts this big? | Squirrels by Fotoscenen | Facebook