Chris Zink updated her Spay/Neuter article: http://www.caninesports.com/uploads/1/5/3/1/15319800/spay_neuter_considerations_2013.pdf Check out this too: http://news.ucdavis.edu/search/news_detail.lasso?id=10498 Happy Reading! Sue Puff
Thanks Sue .....two more great articles to add to my puppy packets !!