The tail posture and movement in lions play a crucial role in communication during group activities. When lions are in a group, they use their tail movements to signal various messages to other members of the pride. For example, a lion holding its tail high may indicate confidence and dominance, while a lowered tail could signal submission or fear. Rapid flicking of the tail could indicate agitation or excitement, whereas a relaxed swaying tail may suggest contentment or relaxation. Overall, tail posture and movement serve as important non-verbal cues that help lions coordinate their actions, maintain social hierarchy, and communicate effectively within the pride.