This is of particular current interest, given that we just spent several thousand dollars for surgery for one of the cats to remove a tumor in the small intestine. Fortunately, it appears that they got it all, and the prognosis for the 7YO is good.
You're watching a $248 million film and not a single green or blue screen was used. The alien is a handmade puppet. The cockpit physically rotates to simulate gravity. I looked at the production tech behind this 95% score, and the engineering is wild.