rhinoceros iguana,cyclura cornuta, phoenix, zoo, phoenix, arizona, united states

animal animalia arizona behaviors bobbing bodied competitors cornuta cornuts courtship desert dry elaborate family hard head heavy horn horned iguana iguanacyclura independent intimidate known landmark large legs length lizard located magnificent moving nails nature nose outgrowth phoenix platelike protrusions reptile reptilia rhino rhinoceros rocky scales shedding skin snout spiny states tail thickenings threatened united walking zoo