peeing when excited

[lisasentous]

What you are describing is submissive urination. There are a few threads you can search for information, or try googling "submissive urination in dogs" online. Here is one article you might find interesting:

http://www.usask.ca/wcvm/herdmed/applied-ethology/behaviourproblems/suburine.html

Good article, I am going to try some of the techniques mentioned.