Dark Moon Rising — James M. Thompson

Nature Of The Beast
Dr. James Wilcox is one of the foremost pediatric neurologists in the nation. Yet his expertise is useless in the face of his own brain tumor--the removal of which will result in James losing his senses of smell and taste and suffering from a mood disorder for the rest of his life.

Then a miracle arrives in the form of Dr. Albert Stern, lauded in medical journals for his achievements in sensory augmentation in primates. Dr. Stern is more than willing to apply his radical procedures in an attempt to cure James' condition. The surgery is a success. In fact, it has the unprecedented result of heightening the rest of the patient's senses beyond normal human parameters. But there are side effects that no one could have predicted...

Because something slipped into Stern's chromosome matrix. Something with a homicidal disposition and an appetite for fresh-killed meat. Something that hunts by night...