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the claim

No snake species is both venomous and a constrictor.

the verdict
REFUTED
the evidence says no
Recorded sources
2 sources for · 1 against

Counts group repeated records of the same source within each side. They do not measure evidence strength or source independence.

Is it true that no snake species is both venomous and a constrictor?

No. A reference article on constriction names several snake species that are both venomous and use constriction, including Clelia, the brown tree snake, and some Australian elapids, which contradicts the claim that no snake is both. Two papers separately describe Boa constrictor as non-venomous, but neither addresses constriction, so they only partially bear on the claim.

Verdict: REFUTED · 2 sources for, 1 against · Last checked

The private library was unavailable for some searches in this check. Missing library results are not evidence against the claim.

Evidence for · 2
BoaγPLI: Structural and functional characterization of the gamma phospholipase A2 plasma inhibitor from the non-venomous Brazilian snake Boa constrictor
2020
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Rodrigues, C. F. B., Serino-Silva, C., Morais-Zani, K. d., Kavazoi, V. K., Carvalho, M. P. N., & Grego, K. F. (2020). BoaγPLI: Structural and functional characterization of the gamma phospholipase A2 plasma inhibitor from the non-venomous Brazilian snake Boa constrictor. doi.org. https://doi.org/10.1371/journal.pone.0229657

Evidence against · 1
Constriction - Wikipedia
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Constriction - Wikipedia. (n.d.). en.wikipedia.org. https://en.wikipedia.org/wiki/Constriction

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More for · 1
Identification and characterization of the first endogenous phospholipase A2 inhibitor from a non-venomous tropical snake, Boa constrictor (Serpentes: Boidae)
2020
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Fortes-Dias, C. L., Macedo, D. H. F., Barbosa, R. P., Souza-Silva, G., & Ortolani, P. L. (2020). Identification and characterization of the first endogenous phospholipase A2 inhibitor from a non-venomous tropical snake, Boa constrictor (Serpentes: Boidae). doi.org. https://doi.org/10.1590/1678-9199-jvatitd-2019-0044

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