We kept an iguana in Malaysia before we moved to South Africa - it was easy as it was in an open air enclosure. We left it there as we were told that keeping iguanas in SA was illegal - rubbish, we subsequently found. We have since kept a pair for the past 7 years, in a specially built room 4m by 2m with under floor heating. They have bred for the last four years and we have had regular success at hatching the eggs.
When people come to the house to buy young iguanas we make a point of showing them the adults - the male is about 1.5m long - so that they do not think that the cute little green lizard will stay little for long. We have always been pleased to find that the people who come to us have invariably done their homework and spent time on the Internet etc. researching care and conditions.
The iguanas are my wife's (I 'do' the chameleons) and she interacts with both the male and female at all times of the year, without ever any problems, even when the male is orange and bursting with hormones. I have read of the problem with menstruating women but have never seen any signs of it. Having said, that the male doesn't like me........
David
http://www.sa-chameleons.com