Two-headed animals are a rarity not often seen in nature. In fact they only occur once in every 100,000 births or so. Some cultures think they that they are a sign of bad things to come. When simply, they are just a set of twin embryos that were unable to separate after fertilization. Check out the gallery for some of natures most rare animals.
A two-headed turtle found in China. Its owner stated it was in exceptional health and ate more than a regular turtle did.
A two-headed and two-torsoed bobtail lizard found in Australia. The larger actually tries to attack the smaller. Movement is quite difficult for the pair as both heads control the back legs.
A newborn two headed pig in China. Unfortunately it's condition made it unlike to survive.
A two-headed human baby girl born in Indonesia. Unfortunately suffering from respiratory failure at the moment of her birth.
A two-headed salamander tadpole found in Israel. There were many speculations on the cause of its mutation ranging from pollution to inbreeding.
A two-headed cow calf that was expected to live only 10 days. At the moment the picture was taken it was about 2 months old.
Janus, a two-headed Greek tortoise who was being presented to the press during it's 10th birthday.
A sea turtle found in Turkey who unfortunately died shortly after being found. It had two hearts, lungs and stomachs.