Ruffwear Gnawt-A-Rock Rubber Chew Toy - Natural latex rubber toy inspired by rapidly cooling lava formations from Pacific Northwest volcanoes. Dispenses kibble or treats for interactive feeding, play, and reward. Durable, chew-resistant Erratic bounce for engaging fetch Internal chamber dispenses kibble or small treats Size suitable for large-mouthed dogs Made from natural latex rubber – a renewable resource Hand wash Mild Detergent Air dry