Felidae (novel) been attempting to keep standard males from breeding with the special females, and killed them after they failed to comply. He also recalls that Pascal's owner idolizes Mendel, that Pascal offhandedly mentioned his owner's name being Ziebold, and that Pascal spoke of Felidae with yearning. Francis concludes that the murderer is Pascal, who really is Claudandus, and goes to confront him. He finds a program on the computer that catalogs the new breed's genetics and breeding, as well as the cats killed to keep from contaminating the lines. Claudandus reveals himself, explaining that he harbors a deep hatred towards humanity
Felidae (novel) murderer, and that Joker's name was eventually cleared. Jesaja was coaxed out of the catacombs, and has found a home with a bartender. Francis muses that Claudandus had succumbed to hatred, lost his innocence, and in the process, became human. He states that all animals have the ability to lose their innocence and humans, who descended from animals, still carry a hint of innocence. The novel ends with Francis urging the reader to never cease believing in a world where all animals and humans coexist, including those "more sublime and intelligent than the latter--for example, Felidae." In Germany, "Felidae" became