Knee Function. The main function of your hamstrings is to bend your knees. This movement is performed during daily activities such as walking, running, climbing stairs and jumping. Your hamstrings also help rotate your lower leg. Two hamstrings attached to the inside of your knee rotate your lower leg inward.
Life Span The lifespan of a veiled chameleon may be up to five years for females and up to eight years for males. Status They are not listed on the IUCN Red List of Threatened Species. The veiled chameleon is the most commonly bred and available species of its genus in the pet trade.
The Chameleons' closest relatives are ...the iguanas and dragon lizards (Agamidae). In fact, there are iguanas living in Americas called false chameleons, that resemble a lot the real chameleons of the Old World, and even have the ability of changing their color. The oldest known chameleon is the Mimeosaurus, from the Upper Cretaceous (during the dinosaur times) of Mongolia. It already had a high skull with a marked helmet. Today, the 156 species of chameleon species are concentrated in Africa, Madagascar and neighboring areas. Just one species reaches southern Europe and another one India. 2. Unlike most other lizards, chameleons do not creep, but walk slowly, moving just one limb at a time.