Cat senses are unique; they see and hear sights and sounds that are beyond our understanding, and with their sense of taste, touch and smell they experience the world in ways we can only imagine. Our line of Catit Design Senses products was developed with your cat in mind, designed to appeal to all of your cat's senses. Each Catit Design Senses product can be purchased individually, or be purchased together to create a complete Sensory Activity Center for your pet. Sight, sound and touch are key senses used when hunting prey. The Catit Design Senses Play Circuit incorporates all three and is specially designed to entice, engage and entertain your cat while appealing to his natural hunting instincts. Features include: - Peek-a-boo track design allows cat to see, chase and swat the ball - Swirl patterned ball's special colour combination specifically designed to catch and attract cat's attention - Multiple layout possibilites; and additional tracks can be purchased separately to grow the set-up