That is the question!

My male Corgi, at 8 months old, is already acting pretty stud-like. I eventually wanted to get a puppy out of him so I have one of his offspring. BUT he has a tendency to mark his territory... in the house too. And when around some female dogs he gets all giddy and excited. He listens well, and is such a love bug but...

Should I just go ahead and do myself a favor and get him neutered?