Are Tennis Balls Bad for Dogs' Teeth? What Vets Say

Yes, tennis balls can damage dogs' teeth, mainly through abrasion. The fuzzy felt coating acts like sandpaper, and over time heavy chewing or fetching can wear teeth down flat, a problem vets call "blunting". Tennis balls also pose a choking risk for bigger dogs. Used occasionally for fetch they're usually fine; the trouble comes from constant chewing.

It's the classic British park toy, and most dogs love them. But it's worth knowing the genuine risks before you let your dog gnaw one all afternoon.

Why the felt wears teeth down

That fuzzy coating is designed to grip the court, and it grips dirt and grit too. Every time your dog mouths the ball, that grit-loaded felt rubs against the enamel like a mild abrasive. Vets regularly see dogs, especially obsessive ball-chewers, whose canines and carnassials have been worn down and flattened. Once enamel is gone it doesn't grow back, and badly blunted teeth can expose the sensitive pulp, leading to pain and infection.

The wear is worse for dogs that compulsively chew the ball rather than simply chase and fetch it. An occasional game is very different from a ball constantly in the mouth.

The choking and gut risks

Abrasion isn't the only worry:

• Choking. A standard tennis ball is dangerously close to the windpipe size for large breeds. A powerful dog can compress one, get it lodged at the back of the throat, and choke alarmingly fast. Always size up for big dogs.
• Swallowing pieces. Strong chewers shred the rubber and felt, which can cause a gut blockage needing surgery.
• Not actually a chew toy. Tennis balls are made for tennis, not for dogs, so they're not built to standards for canine chewing at all.

How to use tennis balls more safely

You don't have to ban them outright. Sensible use cuts most of the risk:

• Keep them for supervised fetch, then put them away rather than leaving one out to chew.
• Replace balls once the felt is filthy or coming away.
• Choose a ball clearly bigger than your dog's throat.
• Swap to purpose-made dog balls; the rubber ones designed for dog ball launchers are kinder on teeth than felt-covered tennis balls.

If your dog adores fetch, the launcher itself isn't the issue, technique is; our guide Are Ball Launchers Bad for Dogs' Joints? Safe Fetch Tips is worth a look, as is Best Ball Launchers for Dogs: Manual and Automatic Picks.

Better alternatives

If your dog mainly wants something to chew or carry, skip tennis balls altogether:

• A solid rubber ball or indestructible dog toy made for chewing is far gentler on enamel and far harder to destroy.
• A treat dispensing puzzle ball keeps a clever dog busy without the abrasive felt, channelling energy into problem-solving.
• For comfort-chewers and gentler players, a squeaky plush dog toy or a soft snuggle comfort toy satisfies the urge to mouth and carry without wearing teeth, though plush isn't for serious shredders.
• Love a chuck across the field? A soft flying disc is easier on teeth than a felt ball; see Best Frisbees for Dogs: Soft, Safe and Float-Friendly.

If you've noticed flattened, discoloured or broken teeth, or your dog winces when chewing, get your vet to check; dental wear and fractures are common and very treatable when caught early. Enjoy fetch, just don't make a tennis ball your dog's all-day chew.