Frost et al. (1989) redefined this family. The genera belonging to the different subfamilies were assigned to separate families. This view is not generally accepted.
Frost, D.E. and R.E. Etheridge (1989) A Phylogenetic Analysis and Taxonomy of Iguanian Lizards (Reptilia: Squamata). Univ. Kansas Mus. Nat. Hist. Misc. Publ. 81
Frost, D.R., R. Etheridge, D. Janies and T.A. Titus (2001) Total evidence, sequence alignment, evolution of Polychrotid lizards, and a reclassification of the Iguania (Squamata: Iguania). American Museum Novitates 3343: 38 pp.
A hatchling iguana should be purchased from a reputable pet retailer or breeder.
A hatchling iguana may be adequately housed in a 20 gallon aquarium, but since it is going to grow very rapidly during the first year, it is better to start out with the largest cage that it is possible to provide.
I have known pet iguanas that were happy to share a bowl of popcorn with their owners, others that would sneak into the kitchen to eat cat or dog food, and one patient of mine was very fond of chicken hot dogs.
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