Does anyone know what causes dogs to get warts? My dog had already two cosmetic procedures to have five warts removed they spray all over his body and get infected it always seems to come back. Online it says that it could be caused by coming in contact with infected other dog like some kinda of virus but my other dog doesn’t have it and they sleep in the same bed, it’s definitely not papillomavirus because it’s not around eyes or mouth. He has not been around any other dogs on less at the vets that I’m not aware off. I would gratefully appreciated for any health advice for my pet maybe I can get him some kinda steroid or something.