Stats

Chao stats can give Chao special abilities when they reach a certain level. The stat can be raised by giving the Chao animals and chaos drives. Chao have 7 different stats, two of which are hidden. Stats are one of the most important thing for your Chao (aside from making it happy, and feeding it) if you want it to compete in Chao Races and Chao Karate.

Stat Grade
When your Chao is born, it is given grades in it's stats (Which you can check by going to the Health Center in the Kindergarten). It can tell you your the Chao's main skill what stat it is the greatest in. The best grade is S, meaning your Chao is the best in that stat... and the worst is E, meaning your Chao bad in that stat. No worries, you can raise these grades through evolution. You want your Chao's grades to be as high as you possibly can make them.

A Chao's grades are chosen randomly. A Chao that is bred has its grades randomly chosen from the grades of its parents.

Stat Level
Each of your Chao stats has a level, which will begin at 0 and ends at 99 (And will begin at 1 for Chao who have reincarnated).