Nisha had weird growths on her toes; basically warts
!! I forget the name of the virus, but it went away in like a month (by itself).
The vet told me it is most common in young dogs. Also, it is more common for them to have them on the face; she showed me a photo and it looked exactly like your dogs face. I will do some research to find out what the name of the virus is.
Found it
; Nisha had canine papilloma virus AND histiocytomas
Canine Viral Papillomas Histiocytoma in Dogs
I couldn't find a pic like the vet had, but it really did look quite similar. I would still take her to the vet though!