Happens in other mammals also. In kitten is very common to start as light eyes and darken or get more saturated in the first year. Blue eyes in adult cats came

Happens in other mammals also. In kitten is very common to start as light eyes and darken or get more saturated in the first year. Blue eyes in adult cats came also with some genetic diseases included in the same pack. Angora cats with white fur and light blue eyes are often deaf. They were very popular in the past, but is seen now as an non desirable trait and excluded from breeding programs.