Across the nation Veterinarians recommend that you should spay or neuter your dog before the age of 1. They always list all the benefits of neutering
and never mention any of the potential dangers. I would like to state up front that the case for not neutering your female dog is a little more mixed.
As I will explain below.
Here is what the
American Veterinary Medical Association
has to say about spaying and neutering.
They list the following benefits:
-Improved behavioral problems
-Decrease in testicular and prostate cancers in males
-Decrease in breast and ovarian cancers in females
-Less roaming in search for a mate
Along with these claims they say that neutering will calm you dog down and make them better behaved.
While it may be true that neutering a dog will decrease the instance in testicular, prostate, breast and ovarian cancers.(makes sense that they will
not get cancer in the organ you removed). They fail to tell you a couple of important facts.
Pros and Cons for Neutering your Male Dog
On the positive side, neutering male dogs
• eliminates the small risk (probably <1%) of dying from testicular cancer
• reduces the risk of non-cancerous prostate disorders
• reduces the risk of perianal fistulas
• may possibly reduce the risk of diabetes (data inconclusive)
On the negative side, neutering male dogs
• if done before 1 year of age, significantly increases the risk of osteosarcoma (bone cancer); this is a
common cancer in medium/large and larger breeds with a poor prognosis.
• increases the risk of cardiac hemangiosarcoma by a factor of 1.6
• triples the risk of hypothyroidism
• increases the risk of progressive geriatric cognitive impairment
• triples the risk of obesity, a common health problem in dogs with many associated health problems
• quadruples the small risk (<0.6%) of prostate cancer
• doubles the small risk (<1%) of urinary tract cancers
• increases the risk of orthopedic disorders
• increases the risk of adverse reactions to vaccinations
Pros and Cons for Neutering your Female Dog
The case for Female dogs is not as strong but arguable, nonetheless. The one major pro is a decrease in pyometra, which occurs in 23% of non-spayed
females and kill 1% of those affected.
On the positive side, spaying female dogs
• if done before 2.5 years of age, greatly reduces the risk of mammary tumors, the most common
malignant tumors in female dogs
• nearly eliminates the risk of pyometra, which otherwise would affect about 23% of intact female
dogs; pyometra kills about 1% of intact female dogs
• reduces the risk of perianal fistulas
• removes the very small risk (0.5%) from uterine, cervical, and ovarian tumors
On the negative side, spaying female dogs
• if done before 1 year of age, significantly increases the risk of osteosarcoma (bone cancer); this is a
common cancer in larger breeds with a poor prognosis
• increases the risk of splenic hemangiosarcoma by a factor of 2.2 and cardiac hemangiosarcoma by
a factor of >5; this is a common cancer and major cause of death in some breeds
• triples the risk of hypothyroidism
• increases the risk of obesity by a factor of 1.6-2, a common health problem in dogs with many
associated health problems
• causes urinary “spay incontinence” in 4-20% of female dogs
• increases the risk of persistent or recurring urinary tract infections by a factor of 3-4
• increases the risk of recessed vulva, vaginal dermatitis, and vaginitis, especially for female dogs
spayed before puberty
• doubles the small risk (<1%) of urinary tract tumors
• increases the risk of orthopedic disorders
• increases the risk of adverse reactions to vaccinations
Behavior
Your vet will tell you that the behavior of your dog will improve when it is spayed or neutered. The fact is, your dog will behave better if you train
it properly and dogs tend to calm down as they age with or without neutering. When dogs are young they are like little kids they have tons of energy
and they have not learned the skills to control themselves in most situations. Most vets recommend getting your dog spayed or neutered between 6
months and 1 year and some will even claim that behavioral changes can take another 6 months to a year to take effect.
I have owned many dogs in my life, not one neutered and if properly trained guess what usually happens in the time between 1-2 years of age....your
dog will start to calm down and behave much better. It is this time when dogs really start to learn really well and remember things. They have
adjusted to your training and what you expect of them. They are much more able to control themselves in different situations, they respond to your
voice much better and believe it or not, all without neutering them.
With all this said, I have seen many dogs spayed or neutered that behave terribly and the reason is that they were not properly trained. Cesar Millan
has made millions off people who do not know how to train their dogs.
Most of us are aware of what an important role hormones play in our own bodies
and the same can be said for our pets. Some medium and large breed dogs are not fully grown until the age of 2 and vets will recommend neutering up to
18 month prior to this. By doing this you are robbing your pet of hormones that are vital to its growth and development. Neutered dogs tend to be
smaller and can develop bone and muscle problems later in life. Six months in a medium sized dog is the equivalent to a 7.5 year old human, with
regards to development. Do you think that a 7.5 year old child would develop properly if you removed his/her testis or ovaries at that age?
[edit on 27-12-2009 by iamcamouflage]