True or False: A wagging tail at a high, stiff position can signal agitation rather than friendliness.

The story behind the answer

True. A wagging tail isn’t always friendly—its height, speed, and looseness matter. A tail held high and moving stiffly often signals arousal or agitation, sometimes a warning. In contrast, a low, loose, sweeping wag that moves the hips usually indicates friendliness and relaxation. Always read the whole dog: tense muscles, forward weight, hard stare, and raised hackles support “not friendly,” while soft eyes and relaxed posture suggest “all good.”

Fun fact: Studies show dogs wag more to the right when feeling positive and to the left when uneasy, reflecting brain asymmetry. Memory tip: “High and hard—guard your guard.” Also note that docked or curly tails can be harder to read, so rely on full-body cues.