
It was on this forum that I first learned there were significant benefits to NOT neutering a male, from the article Brainless posted. I feel the article is very fair and it does give the risks and the benefits both ways and does urge readers to make the decision that is best for them and their dog in their situation. My boy, Lab, is three now, not neutered, has never humped anything other than his Poppa Bear, does not mark in the house and is an all round good boy, most of the time. He does not look to scrap with other intact boys and will avoid if he can but he will not back down either, he's not a whimp. He'll stand up for himself if pushed, which he has been and we have had a few skirmishes. I am lucky to have a Vet who supports my decision but in North America this is not the norm.
I have garnered quite a list of reading material on the subject, covering health, which is solely what the article by Laura Sanborn deals with, but also with behavioural and societal concerns. One poster wondered about the % of aggression problems in neutered as opposed to intact dogs. There was a study, C-BARQ, that addressed behaviour such as this for purposes of bringing up the best service dogs. As far as I have found so far it is the ONLY study of it's kind and the results are very, very surprising in some cases. It's in the list below but I will point it out for you:
http://www.acc-d.org/2006%20Symposium%20Docs/Session%20I.pdfNon-reproductive Effects of Spaying and Neutering
Proceedings of the Third International Symposium on Non-Surgical
Contraceptive Methods for Pet Population Control * www.acc-d.org
SESSION OVERVIEW - Dr. John Verstegen
This really should be read through as the summary lumps together the main findings but in reading you will discover they did find some differences by breed and gender.
Neuter/Spay - Health, Behavioural, Societal and Other Pros and ConsThis is a reading list of articles and papers by Veterinarians, breed clubs, trainers and others on the pros and cons of neutering or spaying your dog that I have found helpful and very educational. Most are based on extensive Veterinary research and also provide references you can check further. If you are wrestling with the question of when or whether to neuter/spay these may help. They do not all agree and one is even a rebuttal of another. One is a link to a radio show interview. One is a link to a medical testosterone suppressant not yet available in N. America but is in the U.K. and Australia. Some are not easy reading.
I think I personally found the first two in the list to be of most help and I appreciated the non-biased way the information was presented. The list is in no particular order, articles were simply added as I discovered them. If the links are not clickable I have tried to include the name of the paper and author in case you have to search for them. I hope this helps folks out and good luck with your decision. A tip, I went to my Vet to discuss the first two articles with her.
http://www.naiaonline.org/pdfs/LongTermHealthEffectsOfSpayNeuterInDogs.pdfLong-Term Health Risks and Benefits Associated with Spay / Neuter in Dogs
Laura J. Sanborn, M.S.
May 14, 2007
http://avmajournals.avma.org/doi/pdf/10.2460/javma.231.11.1665Determining the optimal age for gonadectomy of dogs and cats,
Margaret V. Root Kustritz, dvm, phd, dact
http://www.savethedals.org/earlyneuter.htmVeterinary "Review" Article on Neutering, with Implications for Dalmatian Stone-Formers Abstracted by Carroll H. Weiss
Study Group on Urinary Stones
Research Committee
Dalmatian Club of America
http://www.showdogsupersite.com/kenlclub/breedvet/neutr.htmlNEUTERING MALE AND FEMALE DOGS
Mary C. Wakeman, D.V.M.
©2003 for BREEDERVET
http://www.littleriverlabs.com/neuter.htmThe Question Of Neutering and at what age
(Put together by Gregg Tonkin, Little River Labradors from postings by Pam Davol PHD and Chris Zink DVM, PhD, DACVP)
http://leerburg.com/pdf/neutering.pdfShould You Neuter Your Dog?
Ed Frawley, Leerburg Kennels * words are l e e r b u r g.com and L e e r b u r g Kennels
http://www.traciehotchner.com/dt/files/WillWeChangeOnEarlySpay-Neuter_Villalobos.pdfThe Bond and Beyond for VPN December 2008
by Alice Villalobos
Will We Change on Early Spay-Neuter?
http://www.showdogsupersite.com/kenlclub/breedvet/castrationindogs.htmlISSUES REGARDING CASTRATION IN DOGS
Mary C. Wakeman, D.V.M.
©2003 for BREEDERVET
http://www.petresource.com/Articles%20of%20Interest/new_views_on_neutering.htmNew Views On Neutering
By Ruth Marrion, DVM
http://www.acc-d.org/2006%20Symposium%20Docs/Session%20I.pdfNon-reproductive Effects of Spaying and Neutering
Proceedings of the Third International Symposium on Non-Surgical
Contraceptive Methods for Pet Population Control * www.acc-d.org
SESSION OVERVIEW - Dr. John Verstegen
http://www.peptech.com/HTML/Animal_Health/Superlorin_general.htmlA non-surgical method to suppress testosterone
http://prdupl02.ynet.co.il/ForumFiles_2/23999370.pdfPros and Cons of Neutering
E. Hardie
Department of Clinical Sciences, North Carolina State University, Raleigh, NC, USA.
http://www.doglistener.co.uk/neutering/rspca.shtmlRSPCA Admit to Spaying and Castrating Puppies AT SIX WEEKS OLD
Stan Rawlinson MTCBPT.MPAACT
Doglistener Behaviourist and Obedience Trainer
http://users.lavalink.com.au/theos/Spay-neuter.htm#vaccShould I spay or should I no..? -- pros and cons of Spay-neuter
Hungarian Vizsla Health Resource
http://www.doglistener.co.uk/neutering/spaying_neutering.shtmlSpaying and Castration (Neutering) Dogs and Cats A Stark Warning
Stan Rawlinson, a full time Dog Behaviourist and Obedience Trainer.
http://www.wholedognews.com/Spay, Neuter, and Cancer: Revisiting and Old Trinity
Myrna Milani, BS, DVM
http://www.caninesports.com/SpayNeuter.htmlEarly Spay-Neuter Considerations for the Canine Athlete One Veterinarian's Opinion
© 2005 Chris Zink DVM, PhD, DACVP
http://www.columbusdogconnection.com/Documents/PedRebuttal%20.pdfRebuttal to "Early Spay-Neuter Considerations for the Canine Athlete"
Lisa M Howe, DVM, PhD, Dipl. ACVS Associate Professor, Small Animal Surgery Co-Chief
Surgical Sciences Sect Dept of Vet Small Animal Clinical Sci
College of Vet Med and Biom Sciences Texas A&M Univ College Station TX 77843
http://www.pluggd.tv/audio/channels/dog_talk_the_radio_show/episodes/4njnhDog Talk Show #96 Tracie Hotchner (10-18-2008)
Early spay/neuter may be harming our dogs! Hear Dr. Christine Zink, DVM, PhD, DAVCP on the physical benefits of delaying neutering and trainer Parvene Farhoody on how it can reduce aggression.
http://www.antrozoologisenteret.no/artikler/art_breed.pdfEffects of breed, sex, and neuter status on trainability in dogs
James A. Serpell* and Yuying Hsu+
http://users.skynet.be/fa242124/a-english/castration-dogs.htmlGonadectomy and behavior
Dr Joël Dehasse
http://homepage.psy.utexas.edu/homepage/faculty/Gosling/reprints/AABS05DogPersonalityReview.pdfTemperament and personality in dogs (Canis familiaris): A review and evaluation of past research
Amanda C. Jones *, Samuel D. Gosling
http://www.skeptvet.com/index.php?p=1_23_Benefits-Risks-of-NeuteringEvaluating the Benefits and Risks of Neutering
The SkeptVet - the owner of this blog is not identified but the articles referenced are searchable.
http://www.petfinder.com/for-shelters/pediatric-spay-neuter.htmlPediatric Spay/Neuter
Dr. Lila Miller, ASPCA
http://k9harmony.co.uk/spaying-and-castration/Spaying and Castration - What Your Vet and the Rescue Centres May Not Tell You
Pauline Waller, member #178 Professional Association of Applied Canine Trainers, - articles referenced and searchable
http://www.champdogsforum.co.uk/cgi-bin/board/topic_show.pl?pid=1123732;hl=castrate#pid1123732To Castrate or Not? - Interesting discussion regarding a young male targeted by an aggressive older male.
http://www.cdoca.org/downloads/files/Early%20SN%20and%20Behavior.pdfNon-reproductive Effects of Spaying and Neutering on Behavior in Dogs
Deborah L. Duffy, Ph.D., and James A. Serpell, Ph.D., Center for the Interaction of
Animals and Society, School of Veterinary Medicine, University of Pennsylvania
http://www.2ndchance.info/spayneuter.htmAt What Age Should I Spay or Neuter My Dog or Cat?
What Are The Advantages And Disadvantages Of Neutering My Pet?
Revisiting The Idea Of Early-Age Neutering
Ron Hines DVM PhD 10/05/09
http://saveourdogs.net/category/health/Articles and links to Veterinary organizations opposing mandatory spay/neuter
http://askdryin.com/blog/tag/dog-behavior-arousal-aggression-spay-neuter/Can Spaying Make Dog Behaviour Worse?
Sophia Yin, DVM, MS March 5, 2009
http://www.associationofanimalbehaviorprofessionals.com/effects_of_neutering.htmlThe Effects of Spaying and Neutering on Canine Behaviour
James O'Heare, Based on section from Aggressive Behavior in Dogs, 2006,
Not on links yet from here down
http://www.petfriendlyworld.com/chatforum/showthread.php?t=23096The Behavioural Effects of Canine Castration
Hazel Palmer, 1993 See post #8 in the chat forum at Pet Friendly World.
http://www.cdoca.org/downloads/files/Early%20SN%20and%20Behavior.pdfDoes Spaying and Neutering Reduce Aggression?
Dr. Polley DVM, 2001 American Dog Breeders Association
http://www.gpmcf.org/respectovaries.htmlA Healthier Respect for Ovaries (in dogs)
David J. Waters, DVM, PhD, Diplomate ACVS
Director, Center for Exceptional Longevity Studies
Gerald P. Murphy Cancer Foundation
http://news.uns.purdue.edu/x/2009b/091201OvarianResearch.htmlMessage for women and dogs: keeping ovaries is linked to longevity
To the Purdue Research Park,
http://www.purdueresearchpark.com