Many people assume a wagging tail always means a happy dog. However, tail wagging actually signals emotional arousal — it can mean excitement, happiness, nervousness, or even aggression.
The direction and style matter: a loose, wide wag usually indicates happiness, while a stiff, high, or fast wag can signal alertness or discomfort. Interestingly, studies show dogs tend to wag more to the right when they see something positive and to the left when they are uncertain or negative.
Learning to read tail wags properly helps you better understand your dog’s true feelings and respond appropriately.
