Quoting the FAQ / Rules at http://www.animeonline.net/faq.php?f...aqrestrictions.
Custom Avatars are only available to Community Members and higher. To become a Community Member, you will need to reach 100 posts or more. Avatars are restricted to 80 x 80 for Registered members. For Community members and above, avatars can be up to 100 x 100. Custom ANIMATED avatars are available to Elite Members and above.