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Infertility in a male dog is defined as the inability to produce a successful pregnancy in a fertile female, even with multiple breedings near the time of ovulation. The causes of infertility fall under three broad categories: failure to copulate or ejaculate, poor semen quality, and prostatic disease. This handout explains the possible causes in detail, as well as methods to diagnose and treat them.
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Lysosomal storage diseases are a rare collection of conditions that are inherited. Many of them are more prevalent in certain breeds and are seen in the first few months of life. Clinical signs vary depending on the type of disease, but commonly include failure to thrive, incoordination, vision loss, and seizure. Prognosis is usually poor for long-term survival.
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Mastitis is a term used to describe inflammation of a mammary gland. In most cases, mastitis is caused by a bacterial infection. Trauma to the mammary gland, or prolonged periods of milk accumulation without milk removal, can lead to inflammation within the mammary gland. Most dogs with mastitis can be treated on an outpatient basis with oral antibiotics and pain medications, though severe cases may require hospitalization or surgery.
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Miscarriage refers to the death of a fetus during pregnancy, with the most common cause being bacterial infection. Hormonal shifts or abnormalities may also cause miscarriages. In many cases, there are no visible signs of miscarriage. If miscarriage is suspected, ultrasound is used to assess the pregnancy and determine whether the fetuses are alive. Finding a cause for the miscarriage, especially if that cause is a treatable condition, may improve outcomes in future pregnancies.
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Many herding breeds (most commonly Collies and Australian Shepherds) have a mutation at the MDR1 gene that makes them more sensitive to the negative effects of certain medications. These drugs include several antiparasitic agents (when given at high doses), the antidiarrheal agent loperamide (Imodium®), and several anticancer drugs. The effects of the mutation vary in severity, depending on whether the dog carries one or two copies of the mutation. There is a cheek swab or a commercially-available test that assesses blood samples for the presence of the MDR1 mutation.
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Although uncommon, cats and dogs are at risk for several diseases during the two months of their pregnancy. Pre-eclampsia occurs if the mothers cannot keep up with the demand for calcium to produce bones and milk. Gestational diabetes can occur due to high concentrations of hormones and result in increased drinking, urination, inappropriate weight loss and lethargy. Mastitis is a bacterial infection of one or more mammary glands that is contracted either through the blood (sepsis) or from the external environment from unsanitary conditions and/or injury from babies’ teeth or nails. Retained placentas can occur and will result in lethargy, pyrexia and abnormal vulvar discharge. Be aware of the signs, symptoms and management for all four conditions.
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Pregnancy in dogs can be diagnosed several different ways including blood tests, radiographs and ultrasound. The benefits and limitations of each test are discussed. Ultrasound is the gold standard for pregnancy detection and assessing viability.
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La castración consiste en extirpar el útero y los ovarios. Es una intervención permanente e irreversible. Aunque se trata de una cirugía mayor que requiere anestesia general, el riesgo es mínimo en animales sanos, sobre todo si son inmaduros.
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Pyometra is a serious and life-threatening infection in the uterus, occurring in female dogs who have not been spayed. The condition must be treated quickly and aggressively. The preferred treatment is to surgically remove the uterus and ovaries by performing an ovariohysterectomy. There is a medical approach to treating pyometra, although the success rate is highly variable and not without considerable risk and potential long-term complications.
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Most dogs care for their puppies with little need for human intervention; if they do not, then their caregivers need to step in. It is critical to maintain a warm environment and ensure they receive enough milk. Puppies’ weight should be checked daily in the first two weeks, and any prolonged crying should be investigated. Feeding can be supplemented with commercial milk replacer if needed. Further feeding and vaccination recommendations are discussed. Contact your veterinarian for specific recommendations.