Two recent cases of pyometra serve as a reminder… We recently wrote an article about one of the serious diseases that is PREVENTABLE, Pyometra.  Over the past few weeks, we have had an unusual number of critically ill dogs that have been diagnosed with pyometra. Let me briefly review. Dogs go into “heat” or estrus approximately twice a year. Over time,  the lining of the uterus thickens. During each heat cycle, the cervix dilates and bacteria in the urinary tract has a pathwa