SPORTSPET Squeak Tennis Balls are super fun and are great for games of fetch. Non-abrasive material Gentle on teeth & gums Internal squeaker Suitable for medium/large dogs Pack of 12 balls Whose dog doesn’t enjoy chasing a tennis ball? Our range of tennis balls are the result of 25 years of experience in developing balls for Junior to Professional tennis players. After 18 months of product research and rigorous testing we’ve launched a brand new line of tennis balls created especially for your pet. Available with and without a built in ‘squeaker’ (we know some dogs prefer a noise-free chase and chew!) the range is non-abrasive, non-toxic and gentle on teeth and gums. Fetch!