Your stuff is so awesome. I know plenty of talented artists, but barely any whose design process is so rigorous and creative. 

The shofixi always made me think of red pandas, so their small size seems to fit.  They probably birth litters as well?

The syreen saving the fot(?) from the zebranky is great. Why do you think they have blue skin? I figured it could be something they ate, like flamingoes and algae. Or maybe the arilou just liked blue.

I think I like the top and bottom middle supox the best, because the 'root' part is more obvious. They probably dig themselves in at night.