Well, Skye shed today so I got out my camera for a little photo shoot. Got the butt pictures! They were not at all happy about it. Echo I am going to say is female. Skye I am going to say is possibly a male. When compared side by side, Echo's tail narrows obviously, where Skye's stays the same. I'm guessing it will become easier to tell one way or another as "he" grows more mature. What do you guys think?