I hear this time and time again, and yet when dealing with intact dogs and talking with those who keep intact (and unbred) dogs (it is uncommon for working dogs to be routinely altered) I see no evidence for it whatsoever. What I do see is that dogs who are kept with people who are serious about their training, exercise, and care are fine intact. That tells me that it's not a matter of something inherent to an intact dog, but rather a situational issue. I'm not suggesting that the average pet owner I see walking down the street everyday is suited to having an intact dog, but rather that I've yet to talk to the serious dog enthusiast that couldn't fix an issue with their dog before resorting to surgery. It's a human problem, a husbandry issue, and most altering done for keeping dogs as what people perceive as "easier pets".
Somehow, the dozens of intact animals that frequent my obedience club are just fine. I'm pretty sure it has to do with the fact that their owners put in extra time and dedication than the average person, and not because they just got lucky and don't have violent, sexually frustrated animals.
If you support altering so that a pet may remain in its home, I assume you support declawing for the same reasons. While I would never declaw my own cat, I would rather see a declawed one than a dead one.
Of course - I couldn't agree more. But you said "absolute medical benefit", and given that Webster defines absolute as
such, I have a hard time viewing preventative altering as benefiting the animal absolutely. Removing cancerous testicles is of absolute benefit; taking them from a healthy 6 month old pup is not.
If owners can remove their animal's sex organs to prevent cancer, why can't I dock my litter of Dobermans to prevent broken/bloody tails? It's disturbingly common if you talk to people, and because their tails lack almost any flesh, bone can be exposed quickly.
Does that then fit under procedures that are acceptable in the name prevention, having weighed the benefits and risks?
Reproductive cancer exists and I would never deny that, however, cut off
anything and the chance for cancer in that organ disappears. Neutering increases the risk of prostate cancer in male dogs (way harder to operate on than the conveniently dangling testicles). It is by no means of clear and obvious benefit to the dog.
If I have to assume my dog will get out and impregnate another dog, I have to assume he will break his tail or shred his ears, especially if he's of a traditionally cropped or docked breed (since they often have thin ears/fragile tails). :shrugs: Why is one thing ok in the name of prevention, and not the others? And maybe my way of engineering things to prevent mistakes is to have a sturdy fence/kennel and excellent training on my intact dog, because I feel the health benefits are worth it.