Why some creatures have a walking animation and others don't in the prey window?

Question

When I open the prey window (where I select a creature to have a prey bonus), each option has 9 creatures where most of the time, just one of them have a walking animation. Sometimes none of them move at all. Why?

Answer 1

Actually none of them appear with the walking animation. The animated creatures you see have a standing animation, which means that they have an animation even while not moving, for example like Slimes. Most creatures, however, have a single sprite facing each direction as a standing animation and thus won't be animated in the Prey window.

Comments

You are right and it makes total sense now. Thanks Lee Kun! I said "walking animation" because I saw today the Clay Guardian "moving", but refreshing again a few times, the only creatures that are "moving" are creatures that are standing still, like the slimes/blobs, Lost Soul, Knowledge Elemental and flying creatures (wasp, bat and mutated bat). Thanks!