Two new 'Fuzzy' novels published
One of the most "furry" s-f novels was H. Beam Piper's 1962 "Little Fuzzy" (Project Gutenberg) followed by his two sequels, "Fuzzy Sapiens" and "Fuzzies and Other People", about the small furry natives of the planet Zarathustra. The three were republished by Ace Books in a combined edition, "The Complete Fuzzy" ('98).
Published after Piper's death in 1964, the three original novels were particularly popular in the late 1970s and early 1980s, just when furry fandom was establishing itself. (Two novels by other authors have since been "written out" of the series.)
"Fuzzy Ergo Sum" is a fourth Fuzzy novel, carrying on the story of the Fuzzies and the human settlers of Zarathustra established in Piper's novels. "Fuzzy Nation", on the other hand, is a complete rewrite of "Little Fuzzy", retelling the basic story but changing the details and some of the characters.
Early fannish comments have mostly been pro and con on Scalzi's novel, arguing whether or not Piper's novel needed to be rewritten, and whether "Fuzzy Nation" is an improvement or not.