If cared for properly, green iguanas can live more than 20 years. But they do indeed grow
grow
and grow along the way. Although iguanas make popular pets, they need lots of time, attention, care, and room to grow. A healthy iguana will grow to be 5 to 6 feet (1.5 to 1.8 meters) in length, and will require a very large cage or an entire room to live in. Iguanas need tall cages because they are tree-dwelling (arboreal) creatures, and prefer to spend the majority of their time as high off the ground as possible. Iguanas also need a special diet, plenty of sun, places to climb, and human interaction and stimulation.