How do you get a Black Puffle, and what are they like?

How long do your puffles survive at your igloo for,without being fed or played with? What makes them run away?

If you are walking a puffle and you start to dance why does it dance with you at excatly the same time?

Is there a way to get the pink puffle in the ice fishing game?

Is there really a rainbow puffle on Club Penguin?

Why are members the only people who can buy puffles? Why can't non-members buy them?

Why do the black puffles turn fiery red?

why do you have to be a member in order to get puffles and stuff? why cant you just buy stuff without being member??