How can I stop my puppy from urinating when she gets excited?
The problem of submissive urination is a combination of a physical condition and a behavioral one. The physical component is a lack of tone in the sphincter of her bladder that holds the urine in. It’s more common in females due to the shortness of their urethra (the connection between their bladder and the outside). This may improve with age.
The behavioral factor is a contraction of the muscles that empty the bladder when she is placed in a very submissive situation or is very excited. She is probably naturally submissive, which makes these experiences stronger stimulants to her.
There is little we can do about the physical part. There are medications which can increase the tone, but I would not recommend them for a puppy. The best control is dealing with the behavioral aspect. Maturity will lessen her submissiveness, but you must work to ensure she becomes more confident in herself.
Avoid situations where the urination occurs. When you come home, instead of greeting her at the door and making a big deal about the reunion, try to diffuse the situation by ignoring her. Just walk right by her, and let her outside before you acknowledge her. Eventually, she will learn not to become too excited about your returns.
Other situations can be dealt with the same way. When strangers approach her, give her a treat or get her attention some other way to diffuse the excitement or threat of the approach. Consult with your veterinarian on this topic as well.