Rare two headed adder caught on camera

Two headed adder (c) Gordon Crook

A two headed adder has been caught on camera by Gordon Crook in North Yorkshire, UK. Mr Crook was alerted to the snake while walking with a local ramblers group. "At first I thought it might be a reflection or a double exposure. Downloaded it onto the computer and it was very evident that it had two heads!" he said. John Wilkinson, Science Programme Manager at the Amphibian and Reptile Conservation Trust, was surprised to see the photo of the animal which he described as a juvenile conjoined twin. He explained that during development the fertilised egg began to split but stopped and it is rare for the animal to have survived beyond hatching. Fellow expert and member of The British Herpetological Society Dr John Baker agreed "This is very unusual and is a very rare find. I don't know of any two headed adder records in the UK.”

Copyright © 2015 BBC. The BBC is not responsible for the content of external sites. Read more.

This page is best viewed in an up-to-date web browser with style sheets (CSS) enabled. While you will be able to view the content of this page in your current browser, you will not be able to get the full visual experience. Please consider upgrading your browser software or enabling style sheets (CSS) if you are able to do so.