Yellow liquid flowing out of a dog after its menstrual period may be caused by pyometra. If the dog’s abdomen becomes enlarged and the lower body secretes mucus with a fishy smell, it is best to take the dog to the pet hospital for examination. If it is pyometra, surgical treatment is required to remove the diseased uterus.
Tip:
Generally, female dogs that have never given birth or older female dogs are more likely to have this problem, so it is best to pay more attention.