Not all tennis balls are created equal! Tuff Balls are the original tennis balls for dogs. These balls have extra-thick natural rubber walls which provide extra durability. And, no chemicals are added for bounce as is done with "human" tennis balls plus the nonabrasive felt won't wear down a dog's teeth like "human" tennis balls do.
Tuff Balls are lead-free. Besides the required surface-coating testing for lead that must be done by a third-party lab (Consumer Testing Laboratories, Inc.), the company conducts additional unrequired tests using gas chromatography and atomic absorption spectroscopy to test all of their dog toys for lead and other heavy metals. The FDA maximum acceptable lead content for surface coatings is 660ppm and the Tuff Balls tested at less than 7ppm, which is less than the lead concentration found in most tap water.
Available in 3 sizes: