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 lizard with the shortest lifespan is the chameleon, which typically lives just one to three years in captivity. Most lizards live an average of 10 to 20 years. Geckos and iguanas both live into their teens or early 20s. Other lizards, such as the Mexican Beaded Lizard, sometimes live into their 30s.