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jazzybee445 · 05-15-2010, 02:37 PM

Here is the research done for female dogs its the same link as above.

For female dogs, the situation is more complex. The number of health benefits associated with spaying may exceed the associated health problems in some (not all) cases. On balance, whether spaying improves the odds of overall good health or degrades them probably depends on the age of the female dog and the relative risk of various diseases in the different breeds.

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

One thing is clear – much of the spay/neuter information that is available to the public is unbalanced and

contains claims that are exaggerated or unsupported by evidence. Rather than helping to educate pet

Page 3 of 12

owners, much of it has contributed to common misunderstandings about the health risks and benefits

associated of spay/neuter in dogs.

05-15-2010, 02:37 PM	#97
jazzybee445 Senior Yorkie Talker Join Date: Dec 2008 Location: California Posts: 229	Here is the research done for female dogs its the same link as above. For female dogs, the situation is more complex. The number of health benefits associated with spaying may exceed the associated health problems in some (not all) cases. On balance, whether spaying improves the odds of overall good health or degrades them probably depends on the age of the female dog and the relative risk of various diseases in the different breeds. 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 One thing is clear – much of the spay/neuter information that is available to the public is unbalanced and contains claims that are exaggerated or unsupported by evidence. Rather than helping to educate pet Page 3 of 12 owners, much of it has contributed to common misunderstandings about the health risks and benefits associated of spay/neuter in dogs. Last edited by jazzybee445; 05-15-2010 at 02:38 PM.