Sylvia was only 2 years old when she started getting grey, but she is all black. She is only 2 1/2 now . Harley is 3 years old and Morty is only one, but we will never be able to tell on either of them because Har is white and Mort is blonde and white. Jimmy has a little grey beard and he's about 3 years old. He's only been with us a short time, but he had a rough life until I rescued him. God only knows when he got his grey. (come to think of it, it might even be part of his coloring )