Uh oh..
O positive.
I'm O negative.
Did You Know?
Blood type is inherited, just like eye color.
Certain blood types are more common in certain countries. In China, over 99% of the population has Rh+ blood.
Different kinds of animals have different kinds of blood. Dogs have 4 blood types; cats have 11; cows have about 800.
Some people think blood type tells about personality. Legend has it that Type A is calm and trustworthy; Type B is creative and excitable; Type AB is thoughtful and emotional; and Type O is a confident leader.
In Japan, the idea of blood type as personality type is so popular that Japanese ask “What's your blood type?” about as often as Americans ask “What's your sign?”
From:
http://www.infoplease.com/ipa/A0877658.html