The ISFP (Cat) is close to the ENFP (Ferret) so the XXFP might be the Cat Weasel or something along those lines.
Dragons (INFP) do not fly very often, which is understandable as their wateringhole ENFP is a Ferret and that has four legs. Many of the Dragon-likes could be XNFP Turtles or Crocodiles or Komodo Dragons which do not actually fly at all, or the Wyrm (but that is more like an ENTP).
For the Book:
The Catwoman and later the Mouse (ISFJ) was meant to be an olive branch. Both were rejected out of hand, and in any case the Snake (ENTP) is deaf. Fir the Cat and Mouse are incompatible with the Eagle.