1. Egg-eating by Dasypeltis: https://www.bing.com/videos/search?q=Egg-Eating+Snake&&view=detail&mid=DE62EA5AECED0D43F56FDE62EA5AECED0D43F56F&&FORM=VRDGAR&ru=%2Fvideos%2Fsearch%3Fq%3DEgg-Eating%2BSnake&%26FORM%3DVDMHRShttps://www.bing.com/videos/search?q=SNAKE+EATS+Egg&&view=detail&mid=2326F4B3E929E4017F272326F4B3E929E4017F27&&FORM=VRDGAR&ru=%2Fvideos%2Fsearch%3Fq%3DSNAKE%2BEATS%2BEgg&FORM%3DRESTAB.
2. Phylogeny, evolutionary history, and biogeography of Oriental–Australian rear-fanged water snakes (Colubroidea: Homalopsidae) inferred from mitochondrial and nuclear DNA sequences;Alfaro;Mol. Phylogenet. Evol.,2008
3. The venom apparatus and venom;Bellairs,1969
4. Dentitional phenomena in cobras and other elapids with notes on adaptive modifications of fangs;Bogert;Bull. Am. Mus. Nat. Hist.,1943
5. The functional anatomy of the head of the puff adder, Bitis arietans (Merr.);Boltt;J. Morphol.,1964