Hello ingo!

I agree they must have a large cage.

I recently discovered that acanthosaura and gonocephalus have fluorescent properties the human eye cant see. The yellows and blues are reflected like neon light when the lizards evolve in dim light.

2 fighting males gonocephalus chameleontinus would immediately stop fighting when one is covered with sun tan lotion, the lotion keeps the colors from being reflected making the lizard less threatening.

This will open up an entire new can of worms in regards to there husbandry.