大多数鬣蜥物种是食草动物，吃幼叶，水果和鲜花。有些人吃蜡虫这样的昆虫，而海洋鬣蜥则潜入海洋，从植物中捕获藻类。有些物种在其消化系统中容纳细菌，使它们能够发酵它们所吃的植物材料。绿鬣蜥在年轻时是杂食动物，但在成年后转向几乎完全食草的饮食。年轻的绿鬣蜥主要吃昆虫和蜗牛，并在成年后转向吃水果，花和叶子。它们有锋利的牙齿，可以让它们撕碎叶子。绿鬣蜥也生活在树冠中，随着年龄的增长居住在更高的海拔高度。关于鬣蜥的另一个有趣的事实是，它们可以在危险时分离它们的尾巴并在以后重新生长它们。鬣蜥通常在2至3年达到性成熟年龄，并且根据物种的不同，每个离合器可以产下5到40个卵。对于绿鬣蜥，雄性在雨季期间与雌性建立交配对，并且在旱季开始时离开树顶以使卵受精。
澳大利亚阿德莱德生物代写：杂食动物
Most iguana species are herbivores, eating young leaves, fruits and flowers. Some people eat insects such as wax bugs, while marine iguanas sneak into the ocean and catch algae from plants. Some species hold bacteria in their digestive system, allowing them to ferment the plant material they eat. Green iguanas are omnivores at a young age, but turn to an almost complete herbivorous diet in adulthood. Young green iguanas mainly eat insects and snails and turn to eating fruits, flowers and leaves in adulthood. They have sharp teeth that allow them to tear the leaves. Green iguanas also live in canopies and live at higher altitudes as they age. Another interesting fact about iguanas is that they can separate their tails at risk and re-grow them later. Iguanas usually reach sexual maturity in 2 to 3 years, and depending on the species, each clutch can produce 5 to 40 eggs. For green iguanas, males pair with females during the rainy season and leave the top of the tree at the beginning of the dry season to fertilize the eggs.’;f�����QV