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Various scenarios that put more or less every folks in space for extended periods of time in microgravity in the future have been proposed, mostly based on space but there could be colonization scenarios as well. Yes artificial gravity is also proposed in some cases, but for the purpose of this question let's stick to .

Question: What animals would be best suited as pets or comfort animals for extended periods of spaceflight in microgravity?


From How would a mousetrap for use in space work?

Screenshots from "Mice aboard the International Space Station" https://www.youtube.com/watch?v=q7lgj3aZ8dU

Screenshots from Mice aboard the International Space Station

See also If mice escaped on the International Space Station, could they live and thrive?

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    $\begingroup$ answer: none. Bad, bad, bad, bad idea. $\endgroup$
    – PcMan
    Jul 22 at 8:25
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    $\begingroup$ @PcMan The previous comment is a reminder that the question post does not ask "Do you think it's a good idea if..." specifically because opinion-based answers are not a good fit in Stack Exchange. Answers can be written based on known animal biology and physiology and draw from a huge knowledge base of how well which animals adapt to space. $\endgroup$
    – uhoh
    Jul 22 at 9:31
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    $\begingroup$ Crickets. They make nice sounds, don't eat much, reproduce fast, and you can eat them. $\endgroup$
    – Ng Ph
    Jul 22 at 9:36
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    $\begingroup$ Given how fast mice can move & how they can be a problem if they escaped, maybe a sloth. $\endgroup$
    – Fred
    Jul 22 at 16:36
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    $\begingroup$ I've seen (and, talked to) these guys at space-oriented trade shows - they'd like to interest long-duration astronauts in their product... $\endgroup$
    – Digger
    Aug 22 at 18:44

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