Yeah they can get nasty.....some times males, when they have free roam of a house they pick out a spots that is theirs and get very protective of it. If you get into their area they will chase you out and in spring it can get really bad.

One of the main reasons Vern and George have both house time and cage time. When we first got Vern he was hurt so he lived in our bathroom for awhile, he decided that was his spot and then the fun begain. There nothing like not being able to use your own bathroom because your Iguana thinks it's his home.