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the claim

Octopuses can regenerate lost arms.

the verdict
INSUFFICIENT LEANING
Recorded sources
3 sources for · 0 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 Octopuses can regenerate lost arms?

Unclear. Peer-reviewed sources state that octopuses in the genus Abdopus can regenerate lost arms, and one popular book says a giant Pacific octopus can regrow part of a lost arm. These cover specific species rather than octopuses generally.

Verdict: PARTIAL LEAN · 3 sources for, 0 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 · 3
The Soul of an Octopus
2016
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Montgomery, S. (2016). The Soul of an Octopus. books.google.com. http://books.google.com/books?id=JxDXCwAAQBAJ&dq=Octopuses+can+regenerate+lost+arms.&hl=&as_pt=BOOKS&source=gbs_api

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More for · 2
Size-assortative mating and arm loss in the wild shallow-water octopus Abdopus sp. (Cephalopoda: Octopodidae)
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Size-assortative mating and arm loss in the wild shallow-water octopus Abdopus sp. (Cephalopoda: Octopodidae). (n.d.). cir.nii.ac.jp. https://doi.org/10.1080/00222933.2016.1252069

Revision of the Octopus horridus species-group, including erection of a new subgenus and description of two member species from the Great Barrier Reef, Australia
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Revision of the Octopus horridus species-group, including erection of a new subgenus and description of two member species from the Great Barrier Reef, Australia. (n.d.). cir.nii.ac.jp. https://doi.org/10.1071/it99018

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held for human review17 Oct 2026
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