HOW DID ROSEBUD CHECK OUT FROM HOWLIDAY INN? The Monroes have gone on vacation, once again leaving Harold, Chester, and Howie at Chateau Bow-Wow, which Chester aptly dubbed "Howliday Inn" during their last stay there. The motley crew of boarders may have changed, but the creepy goings-on at Howliday Inn have not. A ghostly voice, buried bones, and a collar with the name "Rosebud" on it suggest that murder may have been added to the services offered at the kennel. A pair of yuppie puppies from posh Upper Centerville, two cat burglars (sisters-in-crime) named Felony and Miss Demeanor, a melancholy Great Dane named Hamlet, and a weasel named, well, The Weasel, join the Monroe pets in getting to the bottom of the mysterious happenings. But will they be able to escape the fate that may