Tails are part of the evolutionary package for many mammals. For dogs and cats, tails help provide balance and offer an additional means of communication. ... Tails can also entertain an animal, and a dog or cat chasing its tail is a sight to see.

What is the purpose of tail in animals?

Many land animals use their tails to brush away flies and other biting insects. Some species, including cats and kangaroos, use their tails for balance; and some, such as monkeys and opossums, have what are known as prehensile tails, which are adapted to allow them to grasp tree branches.

What is the purpose of dogs tails?

The tail helps the dog maintain his balance by putting its weight on the opposite side of the dog's tilt, much like a tightrope walker uses the balance bar to stay on the tightrope. Dogs that enjoy climbing various surfaces will use their tails to balance on uneven footing, such as rocks or trees.