Vicente R. K, Perales C. R, Tabacchi N. L. Histopathological frequency of perianal neoplasms in dogs: casuistry of the Veterinary Pathology Laboratory of the National University of San Marcos (2005-2012). Rev. investig. vet. Perú. 2015;26(4):719-724. doi:10.15381/rivep.v26i4.11211