Story perspectives

Study Reveals Cannibalism Evolved Independently in Snakes

2/16/2026

Summary

Story summary

A Biological Reviews study finds that cannibalism in snakes has evolved independently at least 11 times across lineages.
Researchers analyzed 503 reports from 207 species, showing cannibalism is common and often triggered by environmental stress.
Colubridae accounted for 29% of reports, while Viperidae and Elapidae represented 21% and 19%, respectively.
Lead author Bruna Falcão notes that cannibalism may reflect dietary flexibility and jaw structure, with ecological benefits.

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Story summary

A Biological Reviews study finds that cannibalism in snakes has evolved independently at least 11 times across lineages.
Researchers analyzed 503 reports from 207 species, showing cannibalism is common and often triggered by environmental stress.
Colubridae accounted for 29% of reports, while Viperidae and Elapidae represented 21% and 19%, respectively.
Lead author Bruna Falcão notes that cannibalism may reflect dietary flexibility and jaw structure, with ecological benefits.