Description: This toy is specially designed for intelligence development for the parrot, bird, ect. Perfect for macaws cokatoos and a variety of amazon parrots; This parrot treat toy could teach your bird to identify colors, numbers and to follow simple commands strengthens your relationship, built on trust and understanding. You could hide treats inside and stack the parrot cup toy, the bunnies will use their teeth to lift off the cups to reveal the treat. Material: Plastic Specification: #1 Cup Size(DxH): approx. 8x5cm/3.15x1.97inch #2 Cup Size(DxH): approx. 7.5x5cm/2.95x1.97inch #3 Cup Size(DxH): approx. 7.3x4.8cm/2.87x1.89inch #4 Cup Size(DxH): approx. 7x4.6cm/2.76x1.81inch #5 Cup Size(DxH): approx. 6.5x4.5cm/2.56x1.77inch #6 Cup Size(DxH): approx. 6.2x4.5cm/2.44x1.77inch #7 Cup Size(DxH): approx. 6x4.3cm/2.36x1.69inch #8 Cup Size(DxH): approx. 5.5x4.2cm/2.17x1.65inch #9 Cup Size(DxH): approx. 5.3x4cm/2.09x1.57inch Package Includes: 9Pcs Stacking Cup Toy Note: Due to the manual measurement, there is a slight difference between the size from the above and the actual item. Because of the displaying and lighting effects, monitor settings,etc.there could be a little color difference acceptable. Considering light kits including, please keep the bird toy away from little kids in case of choking accidents happening, please kindly note.