KONG Ring Dog Toy. The KONG® Ring is designed for long lasting chew sessions offering enrichment and satisfying a dog’s natural instinct to chew. Made from KONG natural red rubber, the KONG Ring provides ultra-durability and added nubs to give your dog a delightful chewing experience while promoting healthy teeth and gums. Enriching, durable toy supports appropriate chewing behavior Promotes healthy teeth and gums Made in the USA. Globally Sourced Materials. Size Recommendation: Up to 35 lb / 16 kg