There are, so far as I can remember, two moments in which the aliens are seen to contemplate a situation before acting. Maybe 3.
1) A Neomorph sneaks up on a victim, and then communicates with David briefly
2) The Xenomorph enters an airlock upright, scanning the area carefully
That second one ends after like 3 seconds as soon as it hears a noise, at which point it goes back to a screeching, yowling animal.
The third is that really fucking bizarre (and kinda comical) scene where the chestburster pops, and David raises his hands to it, and it mimicks the gesture.
both the Neomorph and the Xenomorph spend most of their time on all fours.
I do wonder if they're just gonna write in that Walter snuck some of the goop onboard with him, otherwise it seems weird that David would just leave behind all the cylinders. Although I guess he could just go back and get em whenever.