Arizona is a state next to California, New Mexico, Nevada, and Utah. It is mostly dominated by savannah, scrublands, and deserts in reality, but in this version, this state is also dominated by wet grasslands and forests, allowing more biodiversity in Arizona in this world than real life Arizona. Just like California and Nevada, Arizona is ruled by both native and nonnative animals, such as nonnative modern animals, former extinct animals, and former fictional species and beings. Many reptiles, including South American rattlesnakes are found in many of the arid and humid parts of Arizona, and, despite competition with native North American rattlesnake species, South American rattlesnakes are thriving.

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