The following are links to PDF files. You will need to save them to your PC to read them.
IPO rules as of 2012
Dr. Chris Zink DVM PhD on Things to consider regarding Early Spay and Neuter.
Published study on age of neutering & osteosarcoma risk in Rottweilers
2011 AAHA Canine Vaccine guidelines
Dr. Schultz's work on Duration of Immunity
Dr. Schultz's recommendations on vaccination schedule
Familial SAS study in Rottweilers
A healthy respect for ovaries - Dr. David Waters - note: this is not a PDF, but a link to his article
