I've written about animator Ken O'Brien before. On Lady & the Tramp he had the ungrateful task of bringing the human characters of Jim Dear and Darling to life. They were both based on live action reference, and a lesser animator might have ruined such an assignment.
But O'Brien knew very well how to work best with that kind of reference. He altered the poses from the live action quite a bit by strengthening body rhythm and overall movement. His drawing and animation is sort of a healthy mix of Fred Moore and Milt Kahl.
Look at the image above, he handled those 3/4 rear vews with such ease! I find myself working that kind of an angle on characters over and over. Its not easy, but look at O'Brien's approach! Intuitive and perfect.
Go here for previous posts on the talented Ken O'Brien:
http://andreasdeja.blogspot.com/2013/01/young-lady.html
Images Van Eaton Galleries:
https://vegalleries.com/productions/walt-disney
Images Van Eaton Galleries:
https://vegalleries.com/productions/walt-disney