In a previous thread I mentioned that D'Arcy picked Demi from a litter of pups. It was immediate. Demi ran directly to D'Arcy and she would tag along with D'Arcy where ever we went. Now at that time, Demi still made most trips riding in my pocket, but when she did get a chance to run, she made the best of it.
Here is Demi trying to keep up with D'Arcy across the back yard.