If it came from Mexico, it's not the Eastern. When I searched this the other day, Sagebrush lizard caught my eye, but was somewhat different looking, but the picture here in your link looks pretty similar. They are really easy to keep. I have bred the Eastern kind before, and I had them set up in a cage very similar to what you would keep a Bearded Dragon in. A 20 gallon long aquarium with a UVB, 85-95F basking site, some type of plants (real or fake) misted once or twice a day.