Comments on Dog Study Links Retaining Ovaries and Longevity

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Brent   LA, CA

3/23/2010 2:54:21 PM

1. The study itself appears to be a rehash of a study that was published back in 2003 - the same data was used but the emphasis in that study was on canine cancer. "Exceptional longevity in pet dogs is accompanied by cancer resistance and delayed onset of major diseases." No mention was made of ovary exposure as related to longevity even though the same Rottweiler data was used.

2. The dogs studied died between 1995-2000 - further indicating this was an old study - first used for a different

3. The major flaw in the 2009 study is the control groups of dogs used. They used one group aged 9-10 yrs. - and another group aged 13.3-14.3. The study only included 183 Rottweiler dogs in healthy home environments. We already know that the benefits of spaying include greatly decreased risk of breast & ovarian cancer. The average age of onset for breast & ovarian cancers in Rottweilers is generally younger than the control groups studied, thus all Rottweilers that died of breast or ovarian cancer at a younger age would have been excluded from the study. This would compare to taking a group of female smokers 90 years old and over - and concluding that cigarette smoking has no effect on women's health since they are still alive at 90. All the women who died of smoking related diseases at younger than 90 years of age (common) would not have been considered in the study.

4. There appears to be other factors that contributed to the longevity of the Rottweilers in the 13.3-14.3 age group. As a group they weighed less at 79-90 lbs. - versus the younger group that weighed 90-100 lbs. Also the older dogs were shorter. Studies have long shown smaller, thinner dogs live longer by two years on

5. The oldest Rottweiler group - 13.3-14.3 - had a considerably larger number of mothers that achieved exceptional longevity - showing a genetic link to their

6. The 2009 study greatly contradicts much broader previous studies on ALL breeds and MIXED breeds - in reputable journals that show unequivocally the spaying prolongs female dog's lives and that breeding shortens their

7. The study is flawed also because he states that the average life expectancy of a Rottweiller is 9-10 yrs., when the majority of resources indicate it is actually 10-12 years - thus the "exceptional longevity" of 13 is not that extraordinary. Even more notable is the major cause of death he shows for in Rottweillers in the 9-10 yr. group is indeed cancer - 73% dying from

8. The study was originally completed to show that Rottweilers that lived past the age of 10 had a reduced risk for cancer. 73% died from it in his 9-10 year group and only 25% died from it in his 13.3 to 14.3 age group. This is the REAL information the study revealed - and the main thrust of the 2003 paper.

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dogvet   los angeles, CA

2/5/2010 8:25:46 AM

How many dogs were in this study?

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Julie   Jacksonville, FL

2/3/2010 4:05:38 PM

Let's not be too quick to generalize. What the studety showed was that female Rotties live longer with ovaries. This is a breed plagued by early mortality due to a variety of tumors, autoimmune conditions, arthritis, and other breed-specific conditions. Before this finding can be extrapolated to other dogs and to humans, it shoudl be repeated in noninbred populations. In addition, this study only looked at an outlier population of exceptional longevity. It did not say whether the average survival calculated from all intact dogs was longer than all spayed dogs or if this phenomenon was applicable to the outliers only.

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Galadriel   Lothlorien, ME

1/5/2010 10:49:43 PM

This article makes perfect sense. Now I have another good reason not to spay. And just because one has an unaltered dog doesn't mean that one has to breed.

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sk   nh, CT

1/5/2010 9:33:46 PM

but what about unwanted puppies


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karen   little rock, AR

1/5/2010 6:57:42 PM

very interesting..gonna discuss this with my vet

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Jenn   Wheaton, IL

1/5/2010 6:51:03 PM

Interesting..... I have a spayed female.

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jennifer   madras, OR

1/5/2010 5:32:19 PM

my rott was 13 when he died and he was a nutured mae. I have a rott/lab now that is 10 and she is still kicking so is now altering really providing a longer life? I think it promotes back yard breeding and unwanted mutts in pounds from irrisponsible owners

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Lilly   Concord, NH

1/5/2010 9:01:34 AM

The only reason why it would become irresponsible is if the owner allowed their dog to run all over the place. If owner's feel that they do not wish to spay their dogs than they will have to make sure to one, have a wooden fence if the owner wishes to let the dog run around off leash or two get a long lead so the dog can run around BUT the owner is holding the other end. Honestly... even when your dog is fixed you are being irresponsible by just letting your dog run anywhere without being with your dog while they are

If you the owner can not be responsible who keeping an eye on the dog while he or she is offlead then yes you should have it fixed and as matter of fact maybe not even own a dog. It just takes one random thing to have the dog get

I think this study is a good thing, the more breeds I come in contac with by owning or training, I see them die sooner than what they should have due to health issues. Not only does spaying lower their life but it also stops the second growth pallet that happens after the six month mark, which means you are not allowing a dog to fully mature.

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Tommy   pocatello, ID

1/5/2010 8:12:20 AM

That is awsome


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IndyDogMom   Indianapolis, IN

1/5/2010 8:11:09 AM

I think this is good information but also believe it to be irresponsible. This will encourage people to not spay their dogs and the population of unwanted dogs will increase.

They should have stressed that this study was of animals not spayed within the first 4 years of life. What happens if the animal is spayed after the first 4 years? How many unwanted litters did these dogs end up having during those 4 years? What about the added expense of care for that female dog that is going into heat on a regular

The article says that the dogs live to be 13 years old. I'm sorry but that is a typical life spam for most dogs (not including the Chinese Shar-Pei).

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Bobbi   SF, CA

1/5/2010 7:13:02 AM

Great! So now people will not get their pets spayed and produce more unwanted animals.

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Ted   south wayne, WI

1/5/2010 5:25:35 AM


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