Downtown Guayaquil boats a park, a block square, devoted to iguanas
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The park has walkways that allow you to stroll among the iguanas.  So long as they stay on the grass you may not touch them, but if they venture onto the walkway, you can.

Yes, they even have iguana attendants to clean up after them and to feed them.

What does an iguana eat?  Greens!  Yes, they are vegetarians. The best food is kale.