https://www.ucdavis.edu/news/golden-retriever-study-suggests-neutering-affects-dog-health
https://www.dogsnaturallymagazine.com/frontline-harmful-dog/
http://thedailygolden.com/dont-be-decieved-english-cream-golden-retrievers/:
http://www.caninecancer.com/lymphoma/http://www.caninecancer.com/lymphoma/