ok idk how silly this would sound but the other day i was building my mob zoo in the town my friends and i have on our server. i decided that main attraction to our zoo should be a hydra (kinda like the t-rex was in Jurassic park). however, just like in Jurassic park, i built the cage and spawned it, not expecting it to demolish the cage it was in (ironically) and escape. my question to you all, is there any kind of semi see thru material (like some kinda bars or glass) that i could spawn this type of gigantic boss in that he CANT break?