My pink white chinchilla Houdini is about 3 years old. I've had him for about half of that time. When I first got him he only had one or two freckles on his ears and a tiny bit of gray at the base of his tail. He has basically looked the same up until about the last 2-3 months. Now, he has more freckles on his ears which I've heard is normal for pink whites as they age. He also has more grey on his tail. It was barely gray at the base, you really had to pay attention to notice it. Now, the gray has moved up his tail and his tail is almost half grey (mixed in with the white hair like a mosaic). Its so weird because its come on so suddenly! Anyone else experience this with pink whites? I've seen babies change colors as they grow, but not adults. Looks like he is morphing into a mosaic chinchilla! hahaha