“…Seventeen CPV types have been proposed and grouped into genera Lambdapapillomavirus (CPV1 and 6), Taupapillomavirus (CPV2, 7, 13 and 17) and Chipapillomavirus (CPV3, 4, 5, 8, 9, 10, 11, 12, 14, 15 and 16) (Table ). CPV1, long known as the canine oral papillomavirus (CoPV), is associated with oral papillomatosis (Porcellato et al., ; Sancak et al., ), together with CPV13 (Lange et al., ), and possibly, a subset of conjunctival lesions (Brandes et al., ). However, most oral papillomas do not progress to invasive cancers and papillomaviral DNA is rarely detected in canine oral squamous cell carcinomas (SCC) (Porcellato et al., ; Munday et al., ).…”