Dr. Ree: "I'll need you to turn your head and cough..."
And people wonder why Dr. Rhee seems to think human male coughing consists of a high-pitched scream...
Please forgive my phasing into art director mode, but...: his tail seems to be a little too long, and maby a little too wavy. The tail serves as a counterbalance, and would be roughly the same length as the head+body above/in front of the hip joint. And while not board-rigid, it'd also be a little too stiff to get that slight slithery action yo have it doing (That's provided I remember text descriptions of how Rhee moves correctly, plus what I remember from assorted "talking to the experts" and "animating the dinosaurs" shorts from the Jurassic Park movies, King Kong, etc. I've tried to picture how Rhee moves from an animator's prespective. Your milage may vary.)
Also, always important with non-human characters: work out how they wear their clothing: how they get into it, how it moves, etc. Not sucha big deal here, but nevertheless worth considering.
Looking forward to a de-Disneyfied Hulian.