Hi Guys, just general question. My baby rat is nearly 3 months old ( around 10-11 weeks now) and he started getting grey/white hair all over his back. I havent noticed the same kind of change with my previous rat who was also grey/black in colour but we adopted him at later stage of his life. I am just curious whether it's a normal process for them to change the colour of their fur or it's smth to be concerned about ( maybs he is sick or stressed?) as this is quite extreme change in colour.