What indication shows that a dog feels nervous and submissive when approaching a situation?

A tail tucked close to the body is a strong indicator that a dog is feeling nervous and submissive. In canine body language, this posture often signifies that the dog is trying to convey submission or discomfort in a particular situation. When a dog tucks its tail, it may be attempting to reduce its perceived size, signaling to others that it poses no threat and is feeling anxious or insecure. This behavior is typically observed in situations where the dog is unsure or intimidated, contrasting sharply with other signs of confidence or aggression like a tail held high or a full display of teeth. Understanding these body language cues is crucial for interpreting a dog's feelings and ensuring safe interactions.