"The black trunk [perhaps containinng K's plan of the Onhava Palace]...stands on another brown or brownish even larger one, and there is I think a stuffed fox or coyote next to them in their dark corner."
This is the only fox (see Ford's poem) in PF. K sees it in Shades' ancestral home stashed away "on the top of the big black trunk, opposite the old mangle, in a niche of the little corridor leading to the so-called fruit room." Could Shade as a youth shot the [now stuffed] fox as it was raiding a barn? Maybe Hentzner's?