What is Canine Papilloma Virus

Canine Papilloma Virus (CPV) causes small, generally harmless growths or warts called papillomas in dogs. These growths are specific to dogs and can be spread through direct contact, contaminated objects, and possibly by insects. 

CPV presents in three ways 

• Oral Papilloma Virus (CPV-1): common in young dogs, affecting the mouth area. 

• Canine Mucous Membrane Papillomatosis: rapidly growing growths in the lips, mouth, and eyes of young dogs. 

• Cutaneous Papillomas and Cutaneous Inverted Papillomas: single growths in older dogs or young adults, respectively. 

Written by Dr. Mariella Roberts, Veterinary Surgeon, Animal Trust Vets CIC | Published May 2025 | Review date May 2027 | This advice is for UK pets only and is not a replacement for seeing a vet