Taking photos of stray cats

I have read most of your novels and I gather that you have some understanding of cats. I live in a neighborhood in Tokyo with many stray cats and I enjoy taking photos of these cats while going on walks (search for "Tokyo cats" on Facebook).

My problem is that they often run away and hide as soon as I stop and point my camera at them. How can I get cats to trust me? Do I need to give them food so that they will let me take their picture? 

Yours respectfully,

Dear David,

Most stray cats are tough and mean. In most cases they don’t trust you. I’m sorry, but that is the way they are. Girls are easier than cats. Why don’t you try girls.