Do monsters move when no one is around?

Question

Does a monster move if there is no player nearby, or is it just waiting patiently at it's spawn sqm?

Answer 1

Edit 02/11/2021- The best way to check this is on lower levels is by going to the Sea Serpent Area were you can see Sea Serpent's are not moving on lower levels. 

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No they don't move, this is well known for older players of tibia, unless you are close to them of something like 64 sqms. I don't remember the exact number or 1 floor above or under them they won't move, i guess this happens to save memory on Cipsofts servers if they were always simulating that creatures move everywhere we would have a higher latency, this is why traps such as plague seal, Pumin seal dt seal, Jugger seal work I leave now a clear example of this happening in Ice Library

https://www.youtube.com/watch?v=BWe-vbkIHo4 (I don't own the video just use it as example to avoid making one myself)
at second 0:40 look at the books at the north on -2 floors they are standing still and wont move a single sqm while the ones on -1 floor does it.