This movie is not in 3D. The characters and the foregrounds are, but the backgrounds are completely flat. It was like seeing actors in front of a pained backdrop. Really took me out of the experience.

The photorealism is gorgeous, but it really takes away the emotional impact the characters are supposed to have. The lack of human facial expressions could have been compensated for with more expressive body language, but it wasn't.

The motion is almost perfect. Animators sometimes forget about the mass and inertia of large characters (horse in Brave, I'm looking at you), but it was wonderfully depicted here. The stampede lacked a certain sense of urgency though, it seems that the reference material was of animals running to get somewhere, not fleeing in panic.