Common pet reptiles have varied lifespans depending on their species. For example, Bearded Dragons typically live between 10 to 15 years, while Leopard Geckos can live up to 20 years when properly cared for. Corn snakes are known to have a lifespan of around 15 to 20 years, and milk snakes similarly can live for 10 to 20 years. These lifespans reflect optimal care conditions, including proper diet, habitat, and health management, which are crucial for ensuring the longevity of these reptilian pets. Regular veterinary visits are also essential to maintaining their health over the years.