This veterinarian recommended FlexiChew Bone will keep your dog occupied for hours The Nylabone FlexiChew Bone features small bristle-like protrusions that are formed during chewing to help clean teeth, and control plaque and tartar build-up. This long-lasting, non-toxic bone is sure to satisfy your dog's natural chewing urges (a far better alternative to your furniture or shoes!). Infused with a delicious and irresistible chicken flavor. The giant sized FlexiChew Bone is ideal for satisfying the chewing instincts of moderate chewers weighing up to 50 pounds.