Cartoon Chaos is the best Cartoon tracker, it has a great community and a wealth of toons from the 40's right up to the present day.
They got a big collection with good speeds.
Ratio is very easy cause many FreeLeech files and if you are a long time seeder you earn enough Bonus Points to buy more GBs.
Currently Free Leech is automatic on torrents over 7 GB. When the server costs are met all torrents will be free leech until the end of that month. Free Leech is only in effect when you see a gold coin beside a torrent.
Members are expected to seed every torrent they download - including free leeches - to a minimum ratio of 1.0, or for a minimum of 168 hours (the equivalent of seven uninterrupted days of seeding).
Tracker has many categories like anime movies, anime series, kids, mature cartoons, educational, shorts.. etc
Cartoon Chaos invites are very rare, if you are lucky and got one, appreciate it!