Our Yorkie has just turned eight months old. She is house trained & has been doing great. Just recently when guests come into our home, she gets soooo excited that she urinates in front of them. Am wondering why all of a sudden this happens when she never did this before when we have had guests? She doesn't do it when we arrived home from somewhere, it is just guests coming to our home. Would appreciate hearing from anyone who has been through this. Thanks.