User blog comment:Lord Loss/Monster Hunter Theory... Blog/@comment-74.193.211.56-20121116154743

Many think that Nargacuga is an evolutionary gap between Mammals and Wyverns due to its somewhat mammalian traits mainly being its "fur". But I believe that this is not true fur as you'd find in mammals because wyverns are reptiles. As such I believe covering Nargacuga are "Pycnofibres" which are hair-like filaments that are similar but not homologous with mammalian hair. The same can be said of Barioth as though they're predominantly scaly have these patches of fuzz on their front paws, neck, and back legs. Other wyverns like Rathian, Berukyurosu, Dyuragaua, and Doragyurosu have these patches off fuzz on them as well. I came up with this theory because of Pterosaurs and due to the fact that many of them had fuzzy covering, yet they were reptiles.