Celebrate your Good Boy’s or Good Girl’s special day with the Happy Birthday Tennis Balls from Spunky Pup. Thes high-quality, Grade-A tennisb balls are Dog-safe and are Non-Pressurized with no gas fill. Non-abrasive surface is safe on dogs’ teeth. Comes as a set of 3 tennis balls. Assorted Colors: either 3 Blue tennis balls or 3 or Pink tennis balls.