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The article explores the life history of teiid lizard Ameiva ameiva in northeastern Brazil, which is characterized by a semiarid climate and a remarkable seasonality in rainfall. The teiid lizard is one of the largest geographic distributions among lizards in the New World and it is commonly seen in Mexico, Central America and most of South America. The authors' study was done at the Ecological Station of the Serido and their work consisted of monthly sampling over three consecutive days from October 2008 - September 2010. They disclosed that adult A. ameiva continue to feed on small prey, which suggests competition for food among age classes.

The article provides information on a study which examined the variation in body temperature during activity and light exposure of Tropidurus (T.) hispidus and T. semitaeniatus lizards in a caatinga ecosystem in Rio Grande de Norte, Brazil. Researchers found that the body temperature of T. hispidus was not affected by the rainy and dry seasons, while the body temperature of T. semitaeniatus was higher in the rainy season. It has been noted that most body temperatures of both species were above substrate and air temperatures. It was observed that both species remained longer in cooler areas, as opposed to sun and cloudy light.