I actually agree on the shoulders...but the face change makes him look a little TOO humanoid
Hmm you're right, my face change does make it more human-ish, probably a bit too much. I still think there's something slightly odd going on with the face, as if he's tilting his head a little, but his snout isnt tilted with his head.
Maybe something like this? I tried keeping puma-like proportions while still trying to make all his head-parts have the same rotation.
The symmetrical anchor marked in pink (his upper shoulders) is by far the most obvious outlier, and the only one I'd suggest is an 'error', the rest could very well be stylistic choice.
Another thing I just noticed is that his hair tuft goes over what we see as his left eye, making me see it as an eyebrow. It makes the face look a little more asymmetrical than it is...
Worth noticing that Im only reacting to this facial asymmetry on this 'sorta sad' expression - the smiling/laughing face looks great. Im just nitpicking this specific one because it's used a lot.