I have a nine month old full breed, AKC-registered boxer with show-heritage. Since I would like to do my part by not increasing the puppy population irresponsibly. Is there a way to have his semen frozen/stored? Has anyone done this?That way he can be neutered and I can rest easy when we go to the dog park.

Actually it has become quite popular. Thank you for being a responsible pet owner. Here is an article on doggie sperm banks.
More pet lovers banking doggie sperm - Pet health - MSNBC.com (http://www.msnbc.msn.com/id/17260980/)