Chanyeol himself was a Kide pet . He was captured at the age of 5 and was sent to the Healix Castle were kide children grew up to were learn how to please the royals how to act and learn their place. Kides are registered to a royal family by getting the family's crescent burned into their skin. Unfortunately if the family disowns you and sends you back a black square is burned over the crescent. Getting the royal family's crescent burned on you official makes you, theirs. A Kide shall never go against its master's orders it must obey no matter what... Even if the master was to say to jump off a bridge, a Kide must obey and jump. Sad life for us really.