1. A good article Dog Neutering is an Emotive Subject for Welfare and Population Reasons but let’s Take a Look at the Facts. . .
2. Neutering Your Male Dog – Pros and Cons
3. Spay and Neutering Dogs 101: Everything You Need to Know

Dr. Becker: The Truth About Spaying and NeuteringDr. Becker: The Truth About Spaying and Neutering (https://healthypets.mercola.com/sites/healthypets/archive/2013/09/30/neutering-health-risks.aspx)