Hello and welcome to FF! Thanks for sharing your story, always enjoy a good one that portrays an animal extraordinary abilities. I'm thinking it's the same toad too and if it can map it's way home from 2 miles away it navigates better than many humans . Do understand your concerns with dogs and having one mess around wth toad is a possibility.

If thinking about adopting it; here is good article to read on it's requirements so you kow what are you getting into: Frog Forum - Toad Basics - Keeping ground-dwelling Toads. A care sheet for Bufo, Anaxyrus, Spea, Scaphiopus, Ollotis, Alytes, Pelobates . Another possibility is to ask around friends or post a thread in the for sale section and try to find toad a home in your area by offering up for adoption (pics always help).

If above not possible, have you tried filling up the hole under dogs house and somehow barring it so neither toad or rabbits can get in there again? Maybe that would deny the home it likes and make him search at other location away from dogs. Good luck !