Lions demonstrate recognition of individual pride members during reunions or separations through vocalizations, body language, and olfactory cues. They often greet each other with vocalizations such as roars, growls, and meows, which help in identifying one another. Lions also use body language like rubbing heads, grooming, and nuzzling to reaffirm their social bonds and relationships within the pride. Additionally, lions rely on their keen sense of smell to recognize individual scents, allowing them to distinguish between pride members even when they are apart.