Share 'MONSTERS!!!'

I am playing with the Monster Chapter at the moment (I think I have said that somewhere else on here). I have created quite a few monster names but I am struggling to write descriptions for them. A couple of them appear in Ant's stories (Escarrion and Hellbred to name a couple) but others like Cerebal Worm and Myst Crawler need descriptions. Any takers (Shane)? :)