[seattle_spring]

It's widely known to wait until a dog is fully grown before sterilization nowadays. Getting them neutered or spayed as a puppy tends to lead to more widespread bone problems, especially hip displasia.

Do you have any literature that supports what you are claiming?

[_yb2s]

No, the vast majority of knowledge out there has never been studied scientifically. If you reject knowledge that isn't "in literature" you are flying blind in life... even scientists can't do that in their own research.

I'm talking from both firsthand experience with dogs, and also as an adult human male that had a medical issue where my testosterone production stopped, which was a fascinating and terrifying firsthand experience into what testosterone actually does... I basically lost all passion and drive, and was both extremely fatigued and indifferent to pretty much everything, exactly the same thing that happened to my dog. I wouldn't wish it on anyone.

I have also had several male dogs neutered as puppies that had no major health issues, and plenty of energy and excitement about life into old age.

So why does a sudden drop of testosterone cause fatigue and a whole host of other medical and psychological issues in adult males (human, canine, and presumably all mammals), but women and children have plenty of energy with lower levels? I have looked somewhat into the scientific literature on this, and have not seen any conclusive explanation, but would love to know.

There is plenty of research into the symptoms of both humans and dogs about the symptoms of hypoandrogenism/hypogonadism. I would be very surprised if neutering was somehow less harmful (especially since having seen firsthand that it is not).