The Bear Who Sailed the Ocean on an Iceberg

One evening Patrick discovers a polar bear - in his parents' freezer! How did Monty - official name Wilbur Ambrose Cedric Barnaby Montague the Third - get there? He talks like he might have swallowed a dictionary as well as a library he has read more books than Patrick knew existed . . . and his stomach is always rumbling. ALWAYS. But how on earth is Patrick going to feed him on pocket money that doesn't stretch much further than a few tins of sardines?