i found a 5" obt and a 4" colbalt blue for 60$ both are adult females. my quesion about the obt is do they prefer to burrow? or would they be happy with a burrow-like hide? i know both species tend to be rather aggressive lol. and colbalt blue i've read are best for more experienced keepers. why is that? is it because they are aggressive? or because of the humidity requirements? or because they tend to escape? or all of the above or what? lol anyway i would appreciate some advice on the care of both.