Originally posted by K9soul

To the argument that you had an unaltered dog who lived so long, yes of course there's no guarantee that an unaltered dog will develop cancer, just like there is no guarantee that a smoker will develop lung cancer. BUT why let there be that kind of increased risk when you can easily eliminate it?

http://www.sonic.net/~cdlcruz/GPCC/library/neuter.htm
The smoking example is the same one I used .

Thanks for the help. Keep the reasons flowing. Where are my homeless dog people? I really want to tug at my cousin's heart strings until she makes an appointment.