My Bella did this often in the past too. It was usually only on arrival at the groomer's and on the exam table at the vet's as he began to examine her. One of my son's friends also had this effect on her. When John would come over she would sprinkle right there at the front door. (Fortunately she never sprinkled on John!) I can say that now, at the age of 3, she is much better. There is an occasional nickel-sized pee on the floor at the groomer's and the vet's and John hasn't been over in a while (lives out of state) so I don't know how she will do the next time she sees him. With Bella anyway, it has improved greatly but I can't say it is 100% gone.