To add onto what Ressy said above, FH's creator left the game late 2011/early 2012 without any sort of heads up and hasn't been back since. The staff have tried to contact him, but he always ignores every message he receives and never responds. He has the source code, and has not shared it with FH's staff. The source code is what makes major changes (ex. new default maps, bug fixes, etc) possible for the game, and without it, the staff can only make minor changes (ex. "removing" general chat, fixing the server, etc). However, he did say a while back in a Facebook post that he currently has no interest in FH and isn't sure about giving up the source code yet. We'll just have to wait and see
If we were able to make updates, however, I'd doubt another model would be added. As great as another model would be, I feel like it would take away the whole "feral" theme with the game. I've seen many idea threads for more models, and usually this is what is explained. My best guess is that if there were to be another model added (against all odds), it would probably be a bear model, not a dear/horse/bird etc
Sorry to burst your bubble, but that's just the way it is