Chao love to be pet. It is important to do this because not only will your chao form a bond with that character, but its happiness will raise (increases by 1 every time you pet it). Happiness is a hidden stat in chao, which can range from -100 to 100. Be sure not to abuse your chao. It is very easy to change your chao's happiness. See SA Chao Life Cycle to get a better understanding of a chao's life.
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