...I think Rosie's DNA test is right.
Check out these three puppies I found on the Web--they're Lab/harrier mix.
It's uncanny. They look exactly like Rosie! So now I have to read up on harriers. The only thing I know about harriers is that they look a lot like beagles, only bigger. Wikipedia says: "The harrier is cheerful, sweet-tempered, tolerant of people, and excellent with children. This pack dog is good with other dogs. ... It prefers life in a pack with people or dogs or both."
This sounds like Rosie, all right. I think her DNA test is right on the money. I still have my doubts about Riley's, though this afternoon when we were walking around the lake someone stopped and petted Riley and said, "Is this a Border? I see Border in him."