The life cycles and histories related to the crawling animals or reptiles are pretty wide and diverse. It can reveal amazing reproductive adaptations. There are some reptiles that are known as the annual species. This is due to the fact that these reptiles are able to hatch from the eggs, mature, contribute to the process of reproduction and die in a period of one or almost two years. One of the main examples of such organisms is the side-blotched lizards. Sea turtles on the other hand live for about 50 years in total which is a very elongated period of time when compared to the other vertebrates belonging to the group of crawling animals.