I think the top.
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Downey woodpecker
Iguanas mainly communicate by body language. A detailed explanation of iguana body language can be found at the related link below.
Marine Iguanas feed underwater and" sneeze" out excess salt, which dries to a white powder on their heads. and eat ppoop
yes, they have a small majestic eye on top of their other eyes
No, the fur that runs from the top of their head and down the back is usually gray and/or brown.
As people age, common gray hair patterns include overall graying, starting at the temples and spreading to the top of the head, and a salt-and-pepper effect where gray hairs are interspersed with colored hairs.
They are on top of each cylinder head one on the right one on the left may be gray or blue.
Iguanas are picky.
Domestic iguanas do.
Iguanas eat dark, leafy, green veggies. Mostly animals bigger than iguanas will eat them.