Anatomically perfect bodies and realistic paint schemes make the EZ-Bird a valuable training tool. Dogs can become complacent retrieving the same objects all the time. Using EZ-Birds will give your training variety and will keep your dog's excitement level high. Eight different models are available.Specifications and Features: VGrip tooth locks for superior hold Soft floating head means no broken teeth Puncture-proof PVC outer skin LongThrow knob for distance with accuracy Double knotted slip-proof rope