Dark deeds in doggy places,"" intones Simon Bognor, special investigator from the Board of Trade. Dark indeed, what with Champion Whately Wonderful (standard poodle) lying dead--the steak did it--and a rabies-infected smuggling trade in Dandle Dinmonts circling the globe. Bognor is more put-upon and engagingly inept than ever, and his enemies have names like Cecil Handyside, Percy Pocklington, and (the seductive) Coriander Cordingley. High facetiousness, even sillier than Bognor's past, with just enough tangible plot, mood (girlfriend Monica is moody), and international scenery to keep the fluff pinned down. Extras await those who a) love dogs, b) hate dogs, c) are up on English geography, or d) latch on to the parody--perhaps unintended--of Dick Francis. Another blue ribbon for Champion Tim Heald.