Thank you both, I'm going to look I to the snow nose, his nose otherwise looks very healthy no signs of being dry or cracking:) he gets fed out of a stainless steel bowl and get orejin adult kibble, he has been sitting in the window and laying in sun spots a lot since it's been so cold out he doesn't get out as much
That can be caused due to many reasons from sun exposure to food to autoimmune diseases. If it gets worse or you see signs of peeling or cracking, best to see your Vet to evaluate it.
The same thing has happened to my dog. Look up "snow nose." It is very common for a dog to lose pigment in their nose.