Talk:Brachiosaurus/@comment-24.131.102.154-20150128210922/@comment-151.225.116.50-20150208155546

You have to make sure the pen is higher than their eye height, otherwise they can just break the blocks.

If you start it off at about 4 or 5 blocks high, and as they get taller, make the pen taller. Also make sure that the pen is wide enough, otherwise it is possible for them to glitch out of the pen.