BS”D
Call your local wannabe mekubal and have a puisa denura placed on it. 1-800-DEAD-DOG is another service you can try. Finally, if you have a local Korean greengrocer, ask him to come over and collect the dog, and then warn your non-Jewish neighbors not to buy any prepared food from him for the next week or so.
Seriously I would purchase dog repellent at any garden center and apply it to the property in question. The dog could be ill and could pose a problem if it bites.
I wanted a giant breed dog both as a pet and for security (at one time I legitimately had to deal with large amounts of cash) but decided against it for many reasons.
Instead I got a 600 kilo polar bear from a circus and hence my nickname.