there are plenty of other animals that are not pack animals who are lovely pets to have. another thing theres no such thing as "absolutes". if you have ever had a iguana and have spent time with it you will see they are kinda animals and i mean actual time not just 10 or so minites but a hour or 2 a day. i hope youll see one day they are great pets. how ever you are right in some ways they can be aggresive if time is not spent with them. tameing a iguana can take a few months all the way up to a year but it can and does happen every day.