Your dog’s favorite toy made better with a rope. Mammoth introduces the next generation of TireBiter toys. Made from a new advanced natural rubber formula for extra long-lasting play. TireBiter II toys are designed and developed in the USA and sustainably manufactured in our North American factory from USA materials. TireBiter II toys are made using a progressive chew system whereby as the size is made larger, the toy gains strength exponentially. Perfect for all different growth stages. Pound for pound, TireBiter ii is the toughest dog toy available. These real-tire-tough favorites are excellent for interactive play, tossing, tugging, and creating hours of positive play experience.