Oh, sorry. I've been keeping track of medieval and early modern "not a" animals. I started with #NotALion:

Here endeth this leaf of the Commonplace Book, which ſheweth Oh, sorry. I’ve been keeping track of medieval and early modern “not…, the work of its first makers and not of this preſs; only the caption is the Senſeſhaper’s. Copied into this book the twenty-fifth day of March, 2015. Finis.

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“Oh, sorry. I’ve been keeping track of medieval and early modern “not….”