Venom has evolved independently at least four times within eulipotyphlan mammals, more than in all other mammal groups combined.
Notes on verification
Directly supported by peer-reviewed PNAS study (Casewell et al. 2019) with verbatim matching claims in abstract; corroborated by PubMed/PMC mirrors. No contradicting sources found post-2019.
Sources
- Unravelling the venomous bite of an endangered mammal | ScienceDaily (sciencedaily.com)
- https://www.pnas.org/doi/10.1073/pnas.1906117116 (pnas.org)
- https://pubmed.ncbi.nlm.nih.gov/31772017/ (pubmed.ncbi.nlm.nih.gov)
- https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6926037/ (ncbi.nlm.nih.gov)