Actually, they're species, not breeds. Breeds are like dogs where they're all domesticated variations within one species.

green iguana (Iguana iguana)
lesser antillean iguana (Iguana delicatissima)

fiji island iguana (Brachylophus fasciatus)

marine iguana (Amblyrhynchus cristatus)

land iguana (Conolophus subcristatus)

desert iguana (Dipsosaurus dorsalis)

rhinoceros iguana (Cyclura cornuta cornuta)
-mona island iguana (Cyclura cornuta stejnegeri)
-navassa island iguana (Cyclura cornuta onchiopsis)
andros iguana (Cyclura cychlura cychlura)
allens cay iguana (Cyclura cyclura inorta)
exuma island iguana (Cyclura cyclura figginsi)
jamaican iguana (Cyclura collei)
turks and caicos iguana (Cyclura carinata carinata)
-bartschi's iguana (Cyclura carinata bartschi)
san salvador iguana (Cyclura rileyi rileyi)
-acklins iguana (Cyclura rileyi nuchalis)
-white cay iguana (Cyclura rileyi cristata)
ricords iguana (Cyclura ricordii)
stout iguana (Cyclura pinguis)
cuban iguana (Cyclura nubila nubila)
-sister isles iguana (Cyclura nubila caymanensis)
grand cayman/blue iguana (Cyclura lewisi)

black spiney-tailed iguana (Ctenosaura similis)
mexican spiney-tailed iguana (Ctenosaura acanthura)
campeche spiney-tailed iguana (Ctenosaura alfredschmidti)
utila island iguana (Ctenosaura bakeri)
club-tail iguana (Ctenosaura quinquecarinata)
rio aguan valley iguana (Ctenosaura melanosterna)
michoacan club-tail iguana ([i]Ctenosaura clarki)
honduran club-tail iguana (Ctenosaura flavidorsalis)
roatan spiney-tailed iguana (Ctenosaura oedirhina)
black iguana/mexican spiney-tailed iguana (Ctenosaura pectinata)
honduran dwarf spiney-tailed iguana (Ctenosaura palearis)
baja/sonoran/cape spiney-tailed iguana (Ctenosaura hemilopha hemilopha)
-subspecies (Ctenosaura hemilopha macrolopha)
-subspecies (Ctenosaura hemilopha insulana)
-subspecies (Ctenosaura hemilopha conspicuosa)
-subspecies (Ctenosaura hemilopha nolascenes)
yucatan spiney-tailed iguana (Ctenosaura/Enyaliosaurus? defensor)
oaxaca spiney-tailed iguana (Ctenosaura/Enyaliosaurus? oaxacana)

common chuckwalla (Sauromalus ater) formerly S. obesus
spiney chuckwalla (Sauromalus hispidus)
spotted chuckwalla (Sauromalus klauberi)
piebald chuckwalla (Sauromalus varius)

Whew, that was fun Probably close to all of them. Not 100% sure if chuckwallas are still in the same subfamily as the rest of the iguanas or not though, but I think they are.

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"Eagles may soar, but weasels don't get sucked into jet engines." - John Benfield

wow had no idea there were so many of them!

Thanks Matt!

Chuckwallas are indeed in the Iguanid family too!

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Regards,
Dominick
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