Relax. Take A Deep Breath. Umbilical Hernia Surgery and all you need to know about it here.

what is a umbilical hernia in a dog and is it dangerous and hereditary?

I am thinking about purchasing a pup that has a umbilical hernia, of which, is not life threating to my knowledge I will be
using this dog as a stud for my two female pups in a couple
of years, approximately. I need to know what a umbilical hernia is, if it is dangerous to the dog and is it hereditary?