They are special because they are a virtual pet, quite like Mametchi. And you seem to be a little young to be on here if you can't spell "special", and "little"(in your username) correctly.
Well first off i see your new so you might want to read the rules and guidelines to get started. I guess mametchi is so popular because hes a lovable bunny wabbit :furawatchi: . And i think this isn't in the right section