Umbilical Hernia is a condition that is present at birth where abdominal fat or internal organs protrude against the abdominal wall near the umbilicus. If the hernia is small, it can be left without treatment. Some small hernias spontaneously close by the time the puppy is 6 months old and some dogs have lived with small hernias their entire lives without difficulty. Large hernias require surgery, which is often done when the dog is being spayed or neutered. Surgery is used to prevent a more serious condition where an intestine loop drops into the hernia causing life-threatening strangulation of the intestine.