
Solution spotted. There was a short iron pipe lying close to the driveway. I could whop the shit out of this dog, leave the package, and be on my way. With the pipe raised high, ready to rain down a blow on the little bastard's head, suddenly someone from inside the house is opening the carport door! I didn't think anyone was home, and had they seen me about to clobber their dog, what was I going to say, "Sorry about caving in your dog's skull, here's your package; good day!"
It was a young teen girl who took the package and didn't say anything. I quickly got the hell out of there, hoping no one else would come out of the house before I peeled out.
As you can see, my encounters with dogs were more comical than terrorizing, but I'm sure you can relate.