Let me tell u the whole story.
There was a planet named Vegeta. There were two kinds of people living in Vegeta.The Toffles and The Saiy-jinns(pronounces as Saiyans.) Well,Anyway, The Toffles were very very smart people with incredible technology. The Saiyans were very big but not as quiete smart as the Toffles. The saiyans were immagrants to this planet. They loved to destroy planets and they were always seeking for more death and destruction. There were 2 things that the saiyans had different than any race known.They all had tails and the all were always eager to fight. Fighting and winning was in their blood.It was like a 6th sense. The Toffles were never scared that saiyans would attack them because there were so many of the toffles and so