The Truth About Dog Toys: Why Antlers and Tennis Balls Might Be Ruining Your Dog’s Teeth

We all love spoiling our dogs. Whether it’s a new ball for fetch or a long-lasting chew to keep them quiet during a Zoom call, we assume that if it’s sold in a pet shop, it must be safe.

But veterinary dentists tell a different story.

The truth is, two of the most popular items in the UK dog world - hard chews (like antlers) and classic tennis balls - are responsible for a significant number of dental injuries every year.

At Nobbl, we believe in "Science-Backed Play." That means designing toys based on canine biology, not just what looks good on a shelf. Here is the breakdown of why some toys are dangerous, and how to spot a safe alternative.

1. The "Slab Fracture" Risk: Why Harder Isn't Better

You might think an "indestructible" toy is the holy grail for a power chewer. But in physics, if an unstoppable force (your dog’s jaw) meets an immovable object (a rock-hard toy), something’s gotta give.

Unfortunately, it’s usually the tooth.

Impact Trauma

When a dog bites down on an unyielding object - like an antler, hard nylon bone, or hoof - the shock of that impact travels straight back into the tooth structure.

This often leads to a "Slab Fracture." This is where a slab of the tooth (usually the upper carnassial, the big chewing tooth at the back) shears off, exposing the sensitive pulp and nerve (Thorne, 2018). It is painful, prone to infection, and often results in expensive extraction surgery.

The "Thumbnail Rule"

How do you know if a toy is too hard? Veterinary dentists use a simple rule of thumb (see what we did there?):

The Thumbnail Test: press your thumbnail firmly into the surface of the toy.

• If it leaves a small indent: The toy has "give." It is safe to chew.
• If it feels like a rock: It is likely harder than your dog’s tooth enamel.

The Nobbl Solution: We use Natural Rubber because it is engineered for energy absorption. When your dog chomps on a Nobbl toy, the rubber compresses. It absorbs the shock of the bite, so their teeth don’t have to.

2. The "Sandpaper Effect": The Hidden Danger of Tennis Balls

If hard toys break teeth, tennis balls sand them down.

It sounds crazy - tennis balls are soft, right? But the danger here isn’t impact; it’s abrasion.

The Grit Trap

Tennis balls are designed for Wimbledon, not your dog’s teeth. The yellow fuzz is made of durable nylon felt intended to survive impact on concrete courts.

1. The Material: The felt itself is abrasive to enamel.
2. The Trap: As soon as the ball gets wet with saliva or mud, that fuzz traps dirt, sand, and grit.
3. The Result: The ball becomes a piece of sandpaper.

As your dog chews, that gritty fuzz files down the tips of their teeth. Over time, this "blunting" creates flat surfaces on their canines and premolars. In severe cases, it can wear the tooth right down to the gum line and expose the pulp - the sensitive part of the tooth (Thorne, 2018).

The Nobbl Solution: Go smooth. Nobbl toys feature a smooth, wipe-clean surface. There is no fuzz to trap dirt, meaning your dog can chew and fetch without sanding their own teeth down.

How to Choose a Safe Toy

Next time you are browsing for a toy, run it through this 3-step safety check:

1. The Thumbnail Test: Can you indent it with your nail? If not, it’s a fracture risk.
2. The Knee Test: If you hit your own kneecap with the toy, would it hurt? If yes, don't let your dog whip it around their head! (Hale, 2024)
3. The Surface Check: Is it fuzzy or abrasive? If so, it might trap grit. Look for smooth, easy-to-clean materials like natural rubber or latex.

Play Safe with Nobbl

We started Nobbl because we wanted toys that were safe on teeth, but tough enough to last. Our Natural Rubber toys are designed to pass every one of these tests - giving you peace of mind and your dog a healthy, happy smile.

Shop our range now

References

Hale, F. (2024) ‘The Knee-Cap Rule’, 18 March. Available at: https://www.haleveterinaryclinic.ca/site/educational-material-veterinary-guelph/2024/03/18/the-knee-cap-rule-endodontics (Accessed: 13 January 2026).

Thorne, S. (2018) ‘Dealing with dental trauma’, Veterinary Practice Today, 6(5), pp. 10–14.

Disclaimer: This article is for informational and educational purposes only and does not constitute professional veterinary advice. Every dog is unique, and play requirements can vary based on breed, age, and health history. Always consult your veterinarian regarding your dog’s physical condition or injury risks before starting a new exercise routine or using new toys.