Amino acid mutations allowing differentiation of the hexon and fibre sequences of a Canine adenovirus type 1 (CAdV-1) identified in an oral sample of an Italian wolf (Canis lupus italicus), with amino acid mutations obtained from the worldwide CAdV-1 reference sequences identified in wolves (Canis lupus), red foxes (Vulpes vulpes), and dogs (Canis lupus familiaris).