Men of the Otherworld (Otherworld Stories, #1)

As a curious six-year-old, Clayton didn’t resist the bite—he asked for it. But surviving as a lone child-werewolf was more than he could manage—until Jeremy came along and taught him how to straddle the human-werewolf worlds, gave him a home…and introduced him to the Pack. So begins this volume, featuring three of the members of the American Pack—a hierarchical founding family where bloodlines mean everything and each day presents a new, thrilling, and often deadly challenge. For as Clayton grows from a wild child to a clever teen who tests his beloved mentor at every turn, he must learn not only to control his animal instincts but to navigate Pack politics—including showing his brutal archnemesis, Malcolm, who the real Alpha is…

Links to the individual short stories and novellas on Goodreads:
"Infusion" (1946)
Savage (1967)
Ascension (1972)
"Kitsunegari" (2007)