My igs were caged in different cages too, but even like that they liked to threaten each other.I used to have a gorgeous juvenile ig called Ariel.He was just perfect! Healthy and sweet and docile.I used to keep him in a medium size cage placed in my daughter's bedroom.When Ariel was one year old he became too big for his cage and i moved him to the balcony where 3 of my adult male igs used to live.Well, the 3 of them started to spend the whole day threatening, headbobing and jumping towards Ariel's new cage! Ariel changed his colour from bright green to dark brown, stopped eating and started to spend hours inside his hiding box. Besides that he became aggressive and i couldnt handle him anymore.You know, young igs do not understand that their cages' bars prevent them from being killed by big adults iguanas!They only think that they cannot escape and that huge iguana will eat them alive!Thats very stressing!When i saw Ariel would become sick if i didnt move him to another place where he couldnt see or smell or hear the other igs, i decided to adopt him out to a good home.The same thing happened to Zombie , to my beloved Gozilla and to Shena. All males. Now i only have 2 male igs.2 adults males that do hate each other.Im moving soon to another country where i have already rented a house.There i intend to put my males' cages kilometers of distance one from the other!