I have an RP I'm currently running now, if I help with this it will be with a co-GM as well. I have run several RP's in the past (even though none of them finished) and have extensive experience with all american releases of FE except 9/10 as well. The Laguz from what I understand are pretty much like the Taguel/Manekete classes but with different animals if I'm not mistaken, right?

EDIT: http://fireemblem.wikia.com/wiki/Laguz This is a useful article for those that don't know how they work, I just took a brief look through it and got the basic jist of what the Laguz are.