Rabbits communicate with each other using a variety of methods such as body language, vocalizations, and scent marking. They use body language like thumping their hind legs to warn others of danger, licking or grooming each other to show affection, and hopping or running to show excitement. They also make different sounds like grunting, squealing, or purring to convey emotions such as fear, pain, or contentment. Additionally, rabbits use scent marking by rubbing their chin or spraying urine to establish territories or communicate reproductive readiness.