It is well known that many species of lizard, turtle and crocodilian require ultraviolet light of a specific wavelength (290-310 nanometers) in order to synthesize Vitamin D3.  This vitamin, in turn, allows the reptiles to make use of the calcium in their diets.  Such reptiles (which generally bask in the sun in the wild) develop [...]

Some of our most familiar and desirable of reptile pets, such as the leopard gecko and the brilliantly-colored day geckos, are members of a fascinating family of lizards that I would like to introduce today.
The 1,050 or more species of geckos comprise the second largest of lizard families, the Gekkonidae (the largest is the Scincidae, [...]