A very common guest of our cenote parking spaces is this Ctenosaura similis, the black (spiny-tailed) iguana. They are native to Mexico and more southern countries, but have been introduced into Florida. It is the largest of the species and can run quite fast. Normally they are not shy and already used to the humans as they learn quickly to pick up the bread they get offered.
They are diurnal – active during the day – and normally have a diet of fruit, flowers, leaves and occasionally some smaller animals. It is not endangered and is even considered food and hunted therefore in some countries.