There are several physical medical reasons for speutering. Spaying a female can decrease her chances of developing 'breast' cancer - the percentage goes down to almost 0 if she is spayed before the first heat. It can also completely eliminate the chances of her deveoping uterine or ovarian cancer, and pyometra (a very serious infection of the uterous, which can be deadly and is extremely costly to treat). Neutering a male dog can decrease the chances of him developing prostate disease, and completely eliminate the chances of testicular cancer.Personally I won't neuter my male unless there's a phsyical medical reason to do so. Same goes for spaying my girl, unless there's a medical reason, I won't do it.
As for the behavioral problems that are supposedly solved by speutering, many of those things CAN be dealt with through training, but some cannot. Female dogs have mood swings just like some women do, and can become cranky and even aggressive when they are in heat. Bitches in heat are not fun to deal with - why do you think the term is used for certain women?! :lol: The inclination to roam is also something that can't really be trained out. When a male dog smells a female in heat (and he can do so for miles!), he is going to do all he can do to get to her. Sometimes he can cause injury to himself in the process. One of my trainer's dogs was so frustrated that he licked his front paws completely bloody raw because the bitch in the kennel next to him was coming in to heat (they didn't realize she was in heat at first). Also, statistics prove that intact dogs are more likely to bite; most of the dog bites you hear about in the news are from unneutered males.
Is this an arguement for speutering? Yes and no. I do not feel that anyone on this board needs to be fussed at or lectured for having intact dogs. Jak is intact, and will remain so until he is at least 2 years old, but will be neutered at around that time if he isn't suitable for breeding, or when he becomes too old to be bred. My other dog was spayed at 2.5 months old. She is a mixed breed. I have no experience breeding dogs, and no desire to have a female with puppies. No reason to keep her intact at all. The average pet owner, however, should not own an intact animal, in my opinion. There is absolutely no reason at all for average people to own or breed an intact animal just because. That's where our overpopulation problem stems from, and I'm sure you all are well aware of this. Shelters and rescues that don't speuter their animals before they are adopted are a BIG peeve of mine, as are breeders who sell their animals to pet homes but require that the animal be bred at least once before the new owner is allowed to speuter it.