Two-headed snake story


X-ray of two-headed snake

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.

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Bibliographic details:

  • Article: X-Ray
  • Author(s): Dr. Biology
  • Publisher: Arizona State University School of Life Sciences Ask A Biologist
  • Site name: ASU - Ask A Biologist
  • Date published: October 7, 2009
  • Date accessed: March 17, 2018
  • Link:

APA Style

Dr. Biology. (2009, October 07). X-Ray. ASU - Ask A Biologist. Retrieved March 17, 2018 from

American Psychological Association. For more info, see

Chicago Manual of Style

Dr. Biology. "X-Ray". ASU - Ask A Biologist. 07 October, 2009.

MLA 2017 Style

Dr. Biology. "X-Ray". ASU - Ask A Biologist. 07 Oct 2009. ASU - Ask A Biologist, Web. 17 Mar 2018.

Modern Language Association, 7th Ed. For more info, see
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