Gemini looking for dog

bit of an odd post but advice needed. im a gemini woman. i own 3 dogs. my last dog died at 18 years old we where very close more then any of my other dogs. she was a gemini too. i got 2 sister dogs cancer's and i have had them 6 years now. im not as close to them personality wise even though im committed to them. im considering getting a new dog in spring a powerful guarding breed to stay with me around the home and to go jogging/hiking with. my question is this what star sign would be most compatible with me ? i want a dog who feels strongly about protecting me and being with me. my last dog being a gemini was very close to me, craved my company, was super active, a total show off and very protective. my 2 cancer dogs dont care where i am half the time. they are very home based love to be indoors, love their beds, love to eat. i also have a capricorn dog who is overly protective of me to a fault he is aggressive and always seems so sad though i give him everything.