The smartest dog I had was a Border Collie/Breton Espanol mix. Very curious, very smart at learning new things. I miss her. They need a yard/open space as th

The smartest dog I had was a Border Collie/Breton Espanol mix. Very curious, very smart at learning new things. I miss her. They need a yard/open space as they are very lively dogs, and we have a large backyard. They are not meant to be apartment dog.