Much like the Royals who are owls the long line of wolves who have ruled over their parts of Hell being Hell born, they could reproduce. Many dogs were Hellhounds but being a Hellhound also meant you had a royal pack leader if you were not a roge. Some had powers well some were stuck to work for their scrapes. If you were a royal you had rules and who you had to marry along with the powers that you got so many had different ones.