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This is an X-ray of the two headed snake. You will notice the skulls have a dragon-like look. Our snake was only 56 cm or 22 inches long, but prehistoric snakes could have been much bigger allowing people to imagine large demons.
Feeding time required some clever thinking by our animal caretaker since the two heads merge at the neck. To keep the snake from choking one head would be given a mouse head-first while the other would be fed the mouse sideways. This prevented the mice from reaching the part where the heads join the body at the same time. It also kept both heads busy so neither one would be tempted to eat the other.
X-ray photo courtesy of Larry Nienaber.
Dr. Biology. (2009, October 07). X-Ray. ASU - Ask A Biologist. Retrieved September 21, 2018 from https://askabiologist.asu.edu/content/x-ray
Dr. Biology. "X-Ray". ASU - Ask A Biologist. 07 October, 2009. https://askabiologist.asu.edu/content/x-ray
Dr. Biology. "X-Ray". ASU - Ask A Biologist. 07 Oct 2009. ASU - Ask A Biologist, Web. 21 Sep 2018. https://askabiologist.asu.edu/content/x-ray