| This is a spayed female (Vega$) with stitches. Females often have problem with laying eggs in captivity and spaying can be a life saving operation. Female iguanas may lay fertilized eggs or unfertile eggs or they may reabsorb the eggs. |  |
 | Males may become agressive during breeding season. Most bites occur during this season. Male iguanas may be threatened by human males or may want to mate with human females. |
 | Females (on the left) have wider bodies. Males (on the right) have larger pores and larger jowles. |