My kitten has a really long tail

Question

My kitten is six months and her tail is really long for her body. Does this mean she is going to be really big?

Answer 1

 I have an all black cat that I believe is a Bombay/Main Coon mix. He also has a really long tail. He's all black and looks like a Bombay but has longer fur and a really long tail like a Main Coon.

Does your cat like to run around a lot? Like darts from one side of the room to the other? Mine does and I was thinking that might explain the long tail. If you watch videos of Jaguars, Cheetahs (or other large wild cats) catching prey and watch their tail it looks like a really long tail is a trait of faster cats. When my cat runs across the living room I notice his tail going crazy keeping him balanced as he dodges the dogs and tries to get them to chase him.

However, a long tail on a Main Coon cat doesn't really make sense with this theory because they're usually much heavier and not nearly as fast. I had a Main Coon cat for probably around 16 years and he was always the lazy one.