Let's keep this simple, shall we?
Play nice, read the FAQs, no stealing.
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FAQs
How do I get one?
Wait for a sale, event, or customs to open.
Are they RP-required? What about thread activity?
Pets are
not RP-required. However, if you chose to do so you may be rewarded. Only one type of pet (Impressed Kittyflit) requires some thread activity, and that is very minimal. Just pop in the thread a few times while it's growing and you're good to go!
How much does a pet cost?
Adult or perma-kid kittyflits are 5k, growing is 7k.
Special "Impressed" pods may be available from time to time. These cost 10k and have an extra growth stage before reaching adult.