iguana (ih-GWAH-nuh) - n., any of several species of large American lizards of the family Iguanidae (except genus Sauromalus, the chuckwallas) with a serrated dorsal crest and large dewlap, esp. the green iguana (Iguana iguana).

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The green iguana is the one kept as a pet -- its native range is from southern Mexico down to Paraguay plus the eastern half of the Caribbean, but it's been introduced to many tropical areas of the world. The name is from an Arawakan language, probably but not provably TaĆno, iwana (provably via Spanish iguana).
---L.
Thanks, WikiMedia!
The green iguana is the one kept as a pet -- its native range is from southern Mexico down to Paraguay plus the eastern half of the Caribbean, but it's been introduced to many tropical areas of the world. The name is from an Arawakan language, probably but not provably TaĆno, iwana (provably via Spanish iguana).
---L.