I went to someones house yesterday to give advice about a situation and there were 7 cats, all black or black and white, I did a double glance at one and said I know that cat, I homed it about 16 years ago, the lady nodded sweetly and said Oh! you remember. How I could remember a black and white cat with no particular marking is amazing for me who cannot remember what I did 5 mins ago. There was something about its sweet face. Then again they are all sweet aren't they.