Arqade is a question and answer site for passionate videogamers on all platforms. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

How high can spiders jump, and can they leap up on to a wall and climb from there? For instance, can a spider jump up to the lip in any of these (O is ground, X is wall):

              X
        X     XX
  X     XX     X
  XX     X     X
   X     X     X
OOOOOOOOOOOOOOOOOO

Everyone says you need to put a lip on your wall to keep spiders out, but nobody says if there is a minimum height before it is effective.

share|improve this question
up vote 6 down vote accepted

I always put my lip just high enough so that I don't bump my head on it (that is, with 2 blocks of air between the ground and the lip). I have watched it stop spiders and have never encountered a spider above the lip. James answer is correct about the spider AI.

share|improve this answer

While they can jump, I am not sure of the height to try and give you a value (The wiki is empty)

What I can speak to is that the spider AI will generally walk forward and then jump up when it needs to, resulting in them being Under the lip and hitting their heads on it. While they can jump up to the lower ones, it would be a timing issue whether or not they made it.

share|improve this answer

I am making a fighting arena round a spawner and I have made the iron bars 4 high and the spiders can't jump that

share|improve this answer
1  
But can they climb it? – fredley Apr 23 '12 at 10:53
    
yes lol but only one could – stu700 Apr 24 '12 at 17:05

The minimum height a spider can jump is about 15 blocks high. It doesn't matter about the lip, it does not even work.( or at least when I tried it) so, you should build your building pretty high, if you do not want spiders invading your building.

share|improve this answer
    
That's just plain wrong. Spiders can maybe climb 15 blocks but never jump that high. Lips on walls are a solid strategy starting at the third block-level of the wall. – tannerli Dec 2 '15 at 9:01

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.