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Johnston RE, Mulley J.2014. The biter bit? Investigation of possible in-ovo self-envenomation in an Egyptian saw-scaled viper using region of interest X-ray microtomography. PeerJ PrePrints2:e624v1https://doi.org/10.7287/peerj.preprints.624v1
Proven examples of self-envenomation by venomous snakes, and especially instances of death as a result of these events, are extremely rare, if not non-existent. Here we use Region of Interest X-ray microtomography to investigate a putative case of fatal in-ovo self-envenomation in the Egyptian saw-scaled viper, Echis pyramidum. Our analyses have provided unprecedented insight into the skeletal anatomy of a late-stage embryonic snake and the disposition of the fangs without disrupting or destroying a unique biological specimen.