Snow Golems Can throw snow through Slabs and walls when going after a slime More info,  I put the snow golem in the wall with one block and a slab on top with just the face showing. when the snow golem would go after the slime it was able to shoot the snowball and hit the slime when it should not be able to.  it does the same when you use a wall block and slab and a fence and slab