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the claim

Porcupines can shoot their quills at enemies at a distance.

the verdict
REFUTED
the evidence says no
Recorded sources
0 sources for · 2 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 Porcupines can shoot their quills at enemies at a distance?

No. Porcupines cannot shoot their quills; instead, the quills are loosely attached and detach to stick into a predator only upon direct physical contact.

Verdict: REFUTED · 0 sources for, 2 against · Last checked

The analysis

The claim is a well-known biological myth. The provided papers (specifically [0] and [3]) explain that quill release depends on physical contact, where the specialized quill tips easily detach and embed themselves when the porcupine rams or strikes an attacker.

Evidence against · 2
Functional histology of quill erection in the porcupine, <i>Erethizon dorsatum</i>
1997
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Chapman, D. M. & Roze, U. (1997). Functional histology of quill erection in the porcupine, <i>Erethizon dorsatum</i>. doi.org. https://doi.org/10.1139/z97-001

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More against · 1
Defensive Behavior and Integumentary Morphology of the Hairy Dwarf Porcupine Coendou spinosus (Rodentia: Erethizontidae).
2024
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Bessa, I. T., Cancela, T. M., Ruiz-Miranda, C. R., Nascimento, A. L. R. d., Carvalho, J. J. d., Giné, G. A. F., & Rocha, V. N. (2024). Defensive Behavior and Integumentary Morphology of the Hairy Dwarf Porcupine Coendou spinosus (Rodentia: Erethizontidae).. doi.org. https://doi.org/10.1002/jmor.70000

What does the evidence say?

The claim is a well-known biological myth. The provided papers (specifically [0] and [3]) explain that quill release depends on physical contact, where the specialized quill tips easily detach and embed themselves when the porcupine rams or strikes an attacker.

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