Squirrels flash their tails for a lot or reasons, including trying to attract mates, as well as distract predators, but they also use their tails to communicate

Squirrels flash their tails for a lot or reasons, including trying to attract mates, as well as distract predators, but they also use their tails to communicate with each other. Tree squirrels typically can communicate with each other via a kind of semaphore sent by flashing their tails and most of their tail flashing is squirrels silently communicating with each other.