Animals mark their territories in various ways, including using scent markings, vocalizations, physical markings, and visual displays. Scent marking is a common method where animals release pheromones to establish their territory boundaries. Vocalizations such as calls or songs can also be used to warn off intruders. Physical markings like claw scratches or droppings can serve as territorial boundaries. Visual displays such as displays of aggression or elaborate courtship rituals can also help animals establish and defend their territories.