* Tails don't grow indefinitely. They stop growing when the dog reaches its full adult size, just like the rest of its body.
* The growth rate of a tail varies. Some breeds may have their tails fully grown by six months, while others might take a year or more.
* Tail length and growth depend on the breed. Certain breeds have naturally short tails (like Corgis or Bobtails), while others have long tails (like Huskies or German Shepherds).
So, while a dog's tail does grow, it does not grow forever. It stops when the dog reaches its full adult size, just like the rest of its body.