In the poem about him, "Out of the houses the rats came tumbling. Great rats, small rats..."
[DOC] [TLE] Poem: The Pied Piper of Hamelin - HolyJoe.Org [PAR] Poem: The Pied Piper of Hamelin; by Robert Browning (1812-1889) ... And out of 
the houses the rats came tumbling.