Sounds logical to me!debs said:Well she could be going thru a false heat. My neighbors dog does this every six month as if she was really in heat. The vet told her that apparently when he spayed her there must have been a little piece of tissue left inside and now her body thinks she needs to go into heat. She swells and the dogs (male of course) come around and go nuts. There is nothing to do except go in and try to find it and remove it. Good luck. Keep us posted.