After rupture of the umbilical cord at birth, the urachus, arteries, and umbilical vein normally retract into the abdomen, thus protecting them from environmental contamination. C-sections have a much greater risk of umbilical infection because of clamping or ligation of the umbilical cord, thus preventing the normal retraction of the umbilical structures.
Most infections are caused by Actinomyces pyogenes, E coli is number two.
The second most commonly infected structure. Umbilical Abscess - Soft tissue abscess of the external umbilicus. Any of these umbilical infections may lead to this eventually. Because the issue is clouded, most veterinarians perform herniorrhaphy as a service without extensive discussions about heritability. Hernias are made up of the hernia sac, peritoneum, and may contain peritoneal fluid and viscera.