I have three male cats and they are generally friendly around strangers but I have noticed that they prefer women. Storm is the friendliest and loves people to pet him and give him attention. Pepper can be very outgoing on one day and then very cautious and timid on the next day. Sunny is very cautious and will usually hide in my room for a while. If it's a man he'll usually stay hidden. Sometimes all three of them will be very friendly and I think it's because they know that the person likes animals. You just never know what to expect when you have cats.