You were not built for living rooms. Your heart runs faster than your legs, and that is the whole point.
Three quiet signals. None of them about breed. All of them about the way they hold a room.
The house is too small. The park is too small. Even the beach is too small. They are running towards something we cannot see.
This is not a behaviour problem. This is a structural one. They were not built for living rooms.
Everything they are becomes legible when they are running. Nothing else explains them as well.