KONG Extreme Goodie Bone Refillable Dog Toy Toy for dogs, very resistant, made of natural rubber. It can be filled with sweets. For large dogs with strong jaws. The KONG Extreme Goodie Bone dog toy is shaped like a bone that makes it easy to grasp and carry. Like all KONG toys, it is of excellent quality and can be filled with treats. In addition, it is made of extra strong natural rubber that makes it particularly resistant and very suitable for all those dogs that have a lot of strength in their jaws. Measurements: Size M: 17.8 x 6.5 x 4.5 cm (L x W x H) Size L: 8.5 cm x 21.6 cm x 5.7 cm (L x W x H) Warning: keep an eye on your pet while playing. Check the product periodically, and make sure that it is not defective or deteriorated. If so, replace or discard this product. Otherwise, your pet could swallow some part of the toy and cause possible injury or discomfort.