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Cat pee glows under a black light. Cats on this world use their pee as a defense mechanism against other cats, and are constantly spraying each other. They also have evolved very porous fur. Th...
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#1: Attribution notice removed
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System
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2021-03-30T23:53:16Z (over 3 years ago)
Source: https://worldbuilding.stackexchange.com/a/37778 License name: CC BY-SA 3.0 License URL: https://creativecommons.org/licenses/by-sa/3.0/