Soft eyes, loose mouth are calming signals. Ears up and forward show interest.
Loose muscles and wiggly, fluid movements indicate comfort. Tense muscles signal stress.
Lip licking, yawning, shaking off are calming signals. Panting, snapping suggest arousal.
Erect forward ears show engagement. Ears flat back signals anger/fear.
Happy fast wags fan out. Slow, stiff wags indicate aggression or anxiety.
Dog rolling belly up is being submissive. Never punish this appeasement gesture.
Front legs down, hind end up invites play. It's a dog's way to start friendly interaction.