(01-29-2020, 01:41 PM)classicdrogn Wrote: Okay, this wasn't a fanfic but a short story published in some anthology I read in the late 80s to early 90s
It's "Allamagoosa" by Erik Frank Russel, winner of the 1955 short story Hugo Award.
You can read it at Baen Books: https://www.baen.com/Chapters/1439133476...76___3.htm