Wow! Do you happen to ever use a reference? Because if not, your ability to draw the likeness of any kind of animal is phenomenal. I wish I had your brain.
I usually only use reference if I'm trying to get animal parts super exact (like for the Relk skeleton, I needed some animals I didn't know as well). Otherwise I just wing it. I memorize general anatomies as formulas, then mix and match and improvise to make it look right. XD
CA-CAW!