I've developed GIF avatars for questions2answers. If you're interested, please send me a message.
https://www.question2answer.org/qa/50622/how-can-i-put-a-gif-avatar-like-a-user-on-profile
I asked about this a long time ago and they said it wasn't possible. Today it is. You can see an example of working GIF avatars on my page.
An user <-----
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