Iguanas are so cool.   I have a few as pets.
Iguana is genus of herbivorous
oh really does that mean they only eat plants?
The genus was first described in 1768
That was a long time ago.  I am trying to learn more about them as I am new iguana pet owner.  How long do they get?
It was described by Austrian naturalist 
Thats cool.  DO you know if they make good pets?
It is a popular pet
Do they really slap their tails when they  feel threatened?
Yes. Behind their necks are small scales which resembles spokes