Umm... this is probably silly, but I started thinking deeply about the whole reptile, mammal, bird classifications for the catchers, and I realized I'm not quite sure where some animals fall in those categories, because there are some that are more than one? 

Like, unicorns and pumas are obviously mammals. But gryphons technically have mammal bodies? My original thought was that they and rocs were birds, but the more I think about it the less I'm sure. 

Also, what is a cockatrice? I thought it was a bird at first too, but now I'm leaning more towards reptile...? 

My understanding is that dragons and cockatrices are reptiles, gryphons and rocs are birds, and unicorns and pumas are mammals.

Cool, thanks. :)

No problem!