Do you own a senior dog with a crusty nose? Seems like there are several folks out there searching for information about the cause. We wondered the same thing when our ancient german shorthair pointer came down with it (actually she was around 14.5- 15 years at the time). The vet was consulted, yet he didn’t have any clear answers. “Could be multiple things.” He recommended rubbing vitamin E over her nose, but we never did. Interestingly enough, it did clear up for several months when she was on rounds of antibiotics and a few other medications.
This photo was from her UnBirthday April 2009. Her nose is kind of crusty looking. It had been clearer back in Jan & Feb. She was a great dog!