The female Dog spaying post in particular has a lot of reader comments and although not about Dog training it is about how to look after a Dog after it has been spayed. (thethreedogblog.com)
There is less than a 1 % incidence of breast tumors of any kind in dogs spayed before their first heat cycle. (texaswestveterinarian.com)
Studies have shown that dogs spayed at a very young age typically have longer limbs and lighter bone structure. (professorshouse.com)