
Thanks to Lorraine and Jacque, we think we have discovered Mollie's breed. She appears to be a feist dog, a wonderful breed of dog that has been around for hundreds of years in America. They're very well-known in the rural South, (i.e. Mollie was born in Kentucky) where they've always been prized for their excellent hunting skills.
The more I researched the breed, the more I am convinced that Mollie is a Feist. [NOTE: I am posting a photo of a Feist dog albeit not as cute as Mollie]. For example, I discovered that Feists have lots of energy, but around the home they aren’t likely to bounce off the walls—in fact, they are more than happy to cuddle on the couch.
Like Mollie, Feists have gentle, adaptable personalities, and they know when to adjust the energy level. Their solid terrier genes can make them slightly territorial, but they are generally good with new people. However, they do have nose when it comes to intruders—they will bark and alert the family if they sense a threat.
Because we love Mollie it really doesn't matter what she is but it's still interesting to know.