Peggy (on the right) is not very impressed with the males of her species. Not surprising considering her last boyfriend bit off her leg. Iguanas are naturally territorial, males especially. Due to their nature, it is not recommended that you keep such specimens together. During the breeding season a sexually mature male will often show off his spectacular colours and masculinity. When spotting an attractive female, whether it be another iguana, an owners arm or even the passing dog! He will size her up before making his move. He will mount the (supposed) female and with his powerful jaws, bite onto her neck. This stops her from running off. Not a pleasant experience if this happens to an unexpected owner! This can be a very aggressive act, often leading to the back being torn and the legs getting bitten too. Because the female has nowhere to go she is often cornered and severe injuries are often a result of such an act. Some are lucky and often get away with a few broken limbs. Others are not so lucky. It is generally in the best interests of iguanas, to keep them individually.