Ranks
Avatars
Full Member and up only.
It must be no more than 120px wide, 80px tall, and 100 KiB in size. It must be a PNG, GIF, or JPEG image. It must be safe for work.
Thanks for providing the information about the avatar only full members can apply custom avatar as profile pic .
You need to know the forum already disable any users to update their avatars with GIF format, if you see someone wear an animated avatar it mean they've wore it for many years before the update.
Also there's few users below full member ranks are wear avatar, this because during the early forum anyone can wear avatar including newbie account.