It's probably an umbilical hernia. One of my Cavaliers had one and I had it repaired when he was neutered.
Your dog should have had two vaccinations by the time he is 13 weeks old. You're taking a big risk by not vaccinating him. I would take him to the vet ASAP for his shots. There is a high risk of an unvaccinated dog getting parvo.
The hernia can wait until you have him neutered. Hernias are repaired, not removed. It's very simple surgery that requires only 1 stitch. These umbilical hernias are usually because the mother dog was a bit enthusiastic when biting through the umbilical cord. They pull the umbilical cord just a bit too hard.
Add. An umbical hernia IS the belly button/umbilicus. Dogs don't have innies and outies like humans.
Your dog should have had two vaccinations by the time he is 13 weeks old. You're taking a big risk by not vaccinating him. I would take him to the vet ASAP for his shots. There is a high risk of an unvaccinated dog getting parvo.
The hernia can wait until you have him neutered. Hernias are repaired, not removed. It's very simple surgery that requires only 1 stitch. These umbilical hernias are usually because the mother dog was a bit enthusiastic when biting through the umbilical cord. They pull the umbilical cord just a bit too hard.
Add. An umbical hernia IS the belly button/umbilicus. Dogs don't have innies and outies like humans.