Amphibians and reptiles are ectotherms, meaning their body temperature is not held constant and is influenced by their environment. Because amphibians and reptiles are ectotherms, most of the species can only be found active in the warmer months of the year, and they retreat into hibernation in the winter. Amphibians are unique among vertebrates in that they have a free-living larval stage in their life cycle.
Amphibians are also very much dependent on water.
Amphibians will also desiccate, or dry out, very quickly if they are kept away from moisture. Reptiles, on the other hand, are not dependent on water for reproduction. Most species lay eggs and some are live bearing, but no reptiles have free-living larvae. Here are some of the most commonly found amphibians and reptiles in Brazos county, with links to pictures and information on the UT Herps of Texas website.