Iguana biting

Question
We have an adult male iguana, and he has aggressive behavior towards my parents, but not to me, is there a reason for that? Is there anyway we can teach him not to act this way?

Answer
Kiki,                                                        They probably didn't handling him like you did. This is normal behavior for them. Since he is an adult and probably set in his ways there won't be any changing him except having him handled by them more often and earning his trust.... Good Luck,Tina