Mating and Behavior
Cuban iguanas reach sexual maturity at an age of two to three years. Males are gregarious when immature, but become more aggressive as they age, vigorously defending territories in competition for females. Females are more tolerant of each other, except after laying their eggs.
Mating occurs in May and June, and females lay single clutches of three to 30 eggs in June or July. According to field research, females deposit their eggs at the same nesting sites each year. The nests are built near each other as suitable nesting sites are becoming rare. On Cuba's Isla de Juventud, Cuban iguanas nest in pockets of earth exposed to the sun by Cuban crocodiles, after the crocodiles' eggs have hatched. These nests are separate from where adult iguanas live. In areas without crocodiles, the iguanas excavate nests in sandy beaches. At the San Diego Zoo, a female built a nest at the end of a long chamber she excavated in the sand. She stood near it for weeks, defending it by shaking her head and hissing at anyone who approached; this behavior demonstrated that Cuban iguanas guard their nest sites. The hatchlings spend several days to two weeks in the nest chamber from the time they hatch to the time they emerge from the nests; dispersing individually after emergence.
Although Cuban iguanas typically remain still for long periods of time and have a slow lumbering gait due to their body mass, they are capable of quick bursts of speed for short distances. Younger animals are more arboreal and will seek refuge in trees, which they can climb with great agility. The animal is a capable swimmer and will take to nearby water if threatened. When cornered they can bite and lash their tails in defense.
Read more about this topic: Cyclura Nubila
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