Does A Blue Nose Pitbull Puppies Blue Eyes Change Color Afyter A Certain Age?

Change in color in the nose of dogs is not breed specific but it can be related with age, environment and some pathological conditions. Dog nose can be liver colored, black, pink, or same as color of coat depending upon breed. Aging is one of the reasons of change in nose color. In old ages,activity of an enzyme called tyrosinase becomes less resulting in to loss of pigmentation. This enzyme is also temperature sensitive. Its function is at peak  hot conditions  and low in winter. Change of nose during cold weather is dependent on above mentioned phenomenon and condition is called snow nose or winter nose.

Some medical conditions can change nose color. These are

1. Trauma
2. Abrasion
   
3. Contact dermatitis especially plastic foods dishes
   
4. Vitiligo
   

If your dog nose has changed from black with no other signs of illness then no need to be worried. Otherwise get vet help.

After 7 to 10 weeks

Yeah my blue (and white) pit's eyes changed once he got around 1 yr. Old.  They went from a true light blue color...to gray....to light grayish now.