I have noticed that many dogs seem to scense that you will let them mate with you. Yes I have had strays but they have followed me & I did feed them well & let them have a bed for the night. They were free to leave whenever they wanted & I didnt chuck them out. I now have a house in Spain & I have taken in a stray there. I think he must have been with someone else as he certainly knew what to do with no encouregmente at all. He is the only stray to keep coming back. He always seems ready to mate with me but after hes finished & been fed he just goes. I have noticed that a few strays do hang around with tho but perhaps it is just me imagining it.