The real, tragic fact of puppy mills--breeding operations for the sale of pedigreed puppies to (mainly) pet shops, where breeding dogs in cages, in often wretched conditions, bear litter after litter--is the background for Conant's sixth dog-centered mystery (Gone to the Dogs, p. 571), which--in spite of the target subject- -is, again, lively, funny, and (to dog people) absolute Premium. This time out, Holly Winter, owner and adorer of two grand malamutes, sleuths to unravel pedigreed dog bloodlines--and to uncover the all-too-common incursions of greedy puppy-mill owners into the products of the reputable breeder. Oh, yes, there are also two murders, but the victims are (from a dog person's point of view) pond scum, so the reader is wholeheartedly with Holly as she gives her major attention to the problem of rescuing a purloined malamute and other doomed animals. Holly's detective work, superb dog-wise, is a bit casual on the murders, but who cares? Certainly not Conant's readers, who- -with ears up and alert eye--eagerly await her next.