There was a lot of good information provided, but don't be too hasty in disassociating familiars with real, live animals. The two aren't mutually exclusive. Mine, Glory, has provided more assistance than any spirit creature to date; and I've been practicing Witchcraft for approaching 22 years.Thank you so much for the info, it literally changed my perspective on familiars and guardian angels.
As for guardian angels, well... That's an entirely different topic.