Sorry to help hijack this post, BUT I couldn't help but relate this story.
1983, rural San Bernardino County, (now part of the city of Ranch Cucamonga), about 11PM, my pal John gets a call on his phone:
Mr. ********
Yes
This is San Bernardino County Sheriff's Department, could you you allow the Deputies outside to apprehend the people in your yard?
OK, sure
Well, you are going to have to restrain your dogs first.
What had happened was a burglar had hit a house at the end of the block and escaping, jumped fence and wall after fence and wall, until he got to John's house. John's dogs, (three, no purebreds, mutts all),surrounded the crook and wouldn't let him out of the yard. The Deputies came in through the house and hooked up the bad guy.
John later told me that one of the SBCS guys complimented him on his dog training skills. Hah hah', John said, 'them dogs ain't trained any more than I am.
Fact is dogs are territorial, most are protective of their space, and all should give you time to shoulder your 870. Much better than life without.