For the dog that loves to play fetch, give them their favorite thing on their birthday - tennis balls! Blue dog tennis balls with "Happy Birthday" printed across the fuzzy tennis ball fabric. These balls are durable and won't harm your pet's teeth. These balls are great for giveaways, puppy parties, events, social media pictures, and more! These balls do NOT include squeakers. Great for puppies and small dogs, like the Biewer Terrier (weighs 10 lb.) modeling in the images.