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Canine brucellosis: A disease caused by bacteria that can affect
pregnant dogs. This bacterium does not have many visible
symptoms in a dog, but can cause a miscarriage in dogs that are
35 weeks along, embryonic death or the birth of stillborn
puppies.
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Canine herpes-virus infection: Can cause a pregnant dog to
miscarry her puppies. In a non-pregnant dog, this viral
infection can be a minor illness. If contracted during the first
or last 3 weeks of gestation, a dog may have a spontaneous
abortion or lose her puppies after birth.
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Toxoplasmosis: The organism may choose a dog to serve as a host.
When a pregnant dog has this infection, she could have a
miscarriage. If there is a dog birth, the puppies could be born
with defects affecting their respiratory and gastrointestinal
systems and cause neurological disorders. Pregnant dogs can
avoid infection by not being around cat feces or raw meat.
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Mycoplasma or ureaplasma: When a pregnant dog is kept in an
overcrowded kennel, she can contract mycoplasma or ureaplasma.
These organisms can cause premature birth, still birth or a
spontaneous abortion that results in the reabsorbing of a fetus.
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Bacterial or viral infections: During complications in
pregnancy, dogs can fall ill to a number of other bacterial or
viral infections. Many of the viruses and bacteria a pregnant
dog is exposed to can often be introduced when the breeder
vaccinates the dog. Vaccinating a pregnant dog is often not
recommended because of the complications it can cause during
gestation.
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Low progesterone levels: When a female dog has an insufficient
amount of progesterone, a hormone that helps maintain a
pregnancy, her body will think it is time to give birth to her
puppies. This will cause the dog to miscarry her puppies.
Replacement therapy can be administered to a pregnant dog with
low progesterone levels to help prevent spontaneous abortions.
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Other abnormalities: Other causes of complications during a
dog's gestation period could be attributed to endocrine
disorders (for example, hypothyroidism), nutritional
deficiencies and genetic defects. |
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