Pyometra is divided into open and closed. When a cat suffers from open pyometra, symptoms such as abdominal enlargement, loss of appetite, vaginal bleeding, and secretion of clear purulent fluid will occur. In closed pyometra, there will be no secretions. In the later stages, the cat will have obvious belly bulging, vomiting, food refusal, thinness, anemia, etc. Therefore, closed pyometra is more difficult to detect and can be life-threatening in severe cases. Moreover, due to the Cats will often lick their own genital secretions, so owners need to pay special attention to detect abnormalities in time.