A few years ago I was "freeze-framing" through a scene with Kaa and Shere Khan. The tiger has settled into his position by a tree, ready to interrogate the snake about Mowgli's whereabouts.
"It's me Shere Khan. I'd like a word with you if you don't mind."
"Shere Khan, WHAT a surprise!" The vowel A on WHAT was drawn by Milt Kahl in such a beautiful way, I had to take closer look. Kaa's head is tilted back, mouth wide open. It is an astonishing drawing. The way Milt figured out this angle showing the inside mouth of this python and keeping it graphic is masterful. I wondered about Milt's observation of real snakes and his discovery for such an effective and interesting expression.
Recently I saw a photo of a snake with a similar head position. Honest to God...all the stuff Milt KNEW!