A Palumbo Piccionello1, A Salvaggio2, A Volta3. 1. Department of Veterinary Medicine, School of Biosciences and Veterinary Medicine, University of Camerino, Camerino, Italy. 2. ANUBI - Ospedale per Animali da Compagnia, Moncalieri (TO), Italy. 3. Department of Veterinary Medicine, University of Parma, Parma, Italy.