Living World Nibblers Kiwi Sticks Wood Chews are made from kiwi tree branches for teeth maintenance and fun. Living World Nibblers are specially designed chew toys that help improve your small petâs dental health. They are also fun to chew on and are an excellent boredom buster. Available in a variety of shapes, sizes, and colours, Nibblers are made of a range all-natural materials such as wood, loofah, willow, corn husk and raffia. All Nibblers are colour-finished using non-toxic food colorants.