Double headed animals

The oldest evidence of a two-headed animal is a good 120 million years old. The fossil of this ancient lizard discovered in 2007 proves that animals with multiple heads are an ancient phenomenon. There are two variants – animals with two heads (bi/dicephalus) and animals with two faces on one head.

A two-headed young tortoise is held by its owner, Noel Daniels, in Wellington, South Africa. Daniels says that the tortoise does all the things a normal tortoise does and that the rare phenomena occurs during the embryonic stage of development. (AP)

Two-headed red slider turtle is displayed at Big Al's Aquarium Supercenter in East Norriton, Pa., Wednesday, Sept. 26, 2007. (AP)

A two-headed snake named Tom and Jerry is pictured 08 May 2008 at the Vivarium exposition in Offenburg,western Germany. (AFP)

Geneva Museum of Natural History's two-headed Greek tortoise is presented to the press and the public during the official celebration of its 10th birthday 05 September 2007, at the Natural History Museum in Geneva. Janus, named after the two-headed Roman god was born 03 September 1997. Geneva's Natural History Museum invited childre born the same year to take part in the celebration of Janus' birthday. (AFP)

The two-headed reptile was rescued from Coogee by the Park and appears to be doing well, despite the life expectancy of such mutated births to be short. It eats from both heads but the larger head has also tried to attack the smaller one, and its movement is difficult as both heads control its back legs. It also has a healthy sibling without any mutation. Bobtails give birth to live offspring, rather than laying eggs. (GETTY/GALLO)

An official shows a two-headed baby crocodile at Samut Prakarn Crocodile Farm on the outskirts of Bangkok, Thailand, Monday, June 25, 2001. The crocodile, which shares the bottom part of the body, has eight legs and two tails, was born at this farm three days ago. It is measured at 17-centimeter (6.70 inches) long and weighs at 70 grams (2.50 ounces). (AP)

The two-headed calf was born on January 25 in the Avetyans' cow house. Two-headed people and animals, though rare, have long been known to exist and documented. (AFP)

A turtle born with two heads and an extra set of legs between them is held by an employee of a Jenkintown, Pa., pet store on Sept. 22, 1986. The owner of the store said while it was the strangest thing he’d ever seen he had no idea how long it would live. (AP)

A two-headed albino Honduran milk snake is shown in Ridge Manor, Fla. Parker, a University of Central Florida biologist, says that most two-headed snakes have typical coloration. Albino snakes don't have dark pigmentation in their skin. Albino milk snakes appear in bright shades of red, orange and white. The biologist says two-headed snakes have been documented to live as long as 20 years in captivity. But with two brains giving commands to a single body, Parker says the snake would have a difficult time surviving in the wild. (AP)

Leonard Sonnenschein, president of the World Aquarium in St. Louis holds a two-headed albino rat snake, Monday, Jan. 2, 2006. The eight-year-old oddity of nature known affectionately by fans worldwide as "We" died of natural causes sometime during the June 16-17, 2007, weekend. (AP)

A cat with two faces, named Frank and Louie, sits on a mat in his home in Worcester, Massachusetts. The animal is known as a Janus cat, named for the figure in Roman mythology with two faces on one head. The owner calls the face on the left Frank, while the face on the right she identifies as Louie. The cat set a Guinness record by surviving for 12 years in Massachusetts. (AP)

A Palestinian farmer holds a two-headed sheep outside his family home in the West Bank al-Fawar refugee camp, near Hebron, on November 9, 2008. (AFP)

A Hereford calf with two joining heads is bottle fed at a veterinary clinic in Elk Grove, California where it was taken by owner Dick Harry. The twelve day old female calf can eat with both mouths but the one being fed is more dominant. (AP)

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