Question: Why do certain animals have tails when humans don't?

Joanna Cruden answered on 14 Jun 2012:

We do have a tail bone, our coccyx at the end of our spine is our tail bone, but it has evolved to reduce in size because we do not use it. Other species use their tails for balance and they can also use it for touching or swishing annoying insects off them and swimming/flight! Tails can be pretty handy!