What breed would make a good companion dog for a 1.5 year old female ACD? She lives on 5 acres and was found sleeping outside the front gate in November. She's been treated for Valley Fever and is due for another check up in two months. I would want her completely cured of VF before introducing another dog. After being on some good medication for the past month, she's back to her old self except for a limp in her right front leg. Any ideas would be greatly appreciated.