My bitch is in season. My 6 yr old is worried about her bleeding and got quite upset. I explained she does bleed sometimes and it will only last 2weeks. He is inquisitive and wants to know what the heck is going on, particularly as we don't make a big deal of it. How would you explain it to a child? My concern is it leading onto a discussion about women having periods and a can of worms he's not yet ready to open.