Silverfish

A common pest with a silvery carapace and an undulating, fishlike scuttle, the nocturnal silverfish infests homes and libraries throughout Golarion. These insects aren't typically dangerous, but their tendency to devour books and clothing often puts them at odds with larger creatures.
Some silverfish can grow as large as a pig, particularly in magic colleges and ancient vault-libraries, where they terrify hapless students and destroy precious tomes. Popular academic lore attributes their unusual size to a steady diet of spellbooks.
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