We have an adult pair of Australian Water Dragons named Cujo and Tera. Tera is 5 and Cujo is 4 years old. They freeroam 24/7 because they do not have any special humidity requirements, so they do not have to be kept in a cage that meets their requirements.
They have UVB lights set up in 2 different rooms along with large tubs of water for drinking/swimming. They are very tame and climb us like we were put there for their private use. This is the first year that they have bred and Tera laid 3 eggs. I am still waiting to see if they will hatch.