"Hernia" is a condition in which part of an organ is displaced and protrudes through the wall of the cavity containing it. In this condition, the opening or weakness in the wall of a muscle, tissue, or membrane that normally holds an organ, takes place.
A perineal hernia is a condition that occurs in both dogs and cats in which there is an abnormal displacement of pelvic and/or abdominal organs (small intestine, rectum, prostate, bladder, or fat) into the region around the anus called the perineum. This condition causes great amount of pain and discomfort in the animal.
The signs of a perineal hernia in dogs are typically very recognizable. A perineal hernia will appear as a well-rounded lump in the pelvic, abdominal, or rectal area. It will be soft and actually feel somewhat squishy to the touch.
Aside from the appearance of the perineal hernia, dog owners may also notice any of these symptoms:
Lethargy and generalized weakness
Lack of desire to participate in normal activities
Physical appearance of pain
Lack of appetite
Constipation or difficulty urinating
Swelling of the anus