Thank you for any insight!
I ran into this rather dramatic picture of warts (Papillomavirus) on a dog:
Or maybe nasal hyperkeratosis in this picture:
https://naturaldogcompany.com/articles/naturally-treat-hyper ... is-in-dozer/
More possibility of warts, also a Papillomavirus :
And another here, where they say don't worry, this is a virus and it will fall off in a few weeks:
Not only are these warts benign (good news!) they are also self-limiting (great news!), which means that they require no treatment. Viral papillomas will dry up and fall off on their own, usually after several weeks to a month or two. These warts are not known to cause pain, discomfort or itching at all. Finally, and importantly, these are not contagious to humans, or other animals, but can be considered contagious to other dogs.
... There isn’t a specific test to confirm whether a growth is a viral papilloma, other than surgical excision and biopsy. However, we see enough of these to feel confident in the diagnosis without resorting to biopsies. Only if the wart persists beyond several weeks, if it rapidly grows or becomes ulcerated, or if it causes Fido discomfort, do we recommend removal and biopsy.