I think iguanas are so strang looking. They have rough skin and large eyes
Yes they have a row of spines down their back and a tiny third eye on their head.  Its odd!
I did not know about the third eye of iguanas. That is so weird!
Yes the green iguana is the most common - it is the one usually kept as a pet
I have seen several of iguana that were being kept as pets. They seem to just sit there all day.
Green iguana in captivity
The Green Iguana ("Iguana iguana") has become popular in the pet trade – over 800,000 animals were imported into the United States alone during 1995, primarily originating from captive farming operations based in their native countries (Honduras, El Salvador, Colombia, and Panama). They can live to be 30 years old as reported by owners. In 1998 a National Iguana Awareness Day (NIAD) was established to discourage consumers from viewing iguanas as "disposable pets". Despite the low cost and
back of their head, near the jawbone, are smaller. Their iris is white or cream, whereas other green iguanas have yellow irises.
Green iguanas possess a row of spines along their backs and along their tails, which helps to protect them from predators. Their whip-like tails can be used to deliver painful strikes and like many other lizards, when grabbed by the tail, the iguana can allow it to break, so it can escape and eventually regenerate a new one. In addition, iguanas have a