Why Throwing a Ball Might Be Bad for Your Dog: Let’s Fetch the Facts!
- Drew Semple
- Dec 9, 2024
- 4 min read
Ball throwing: it’s practically a rite of passage for dog owners. Few sights bring as much joy as your furry friend racing after a ball with boundless enthusiasm, tail wagging furiously. But beneath this picture-perfect moment lies a growing concern among vets, behaviorists, and canine fitness experts. Could this seemingly harmless activity actually harm your dog?
Let’s unravel the evidence and explore why endless rounds of fetch might not be the best game for your dog’s body and mind.

1. Repetitive Strain Injuries: The Hidden Danger
Dogs, like humans, can suffer from repetitive strain injuries. When they sprint after a ball repeatedly, their muscles, joints, and ligaments endure high-impact forces over and over again. Unlike humans, dogs are often too excited to self-regulate, which can lead to overexertion.
A study published in Frontiers in Veterinary Science (2020) identified repetitive, high-intensity activities as a significant risk factor for musculoskeletal injuries in dogs. These injuries are particularly common in the shoulders, elbows, and spine, as these areas bear the brunt of sudden bursts of speed and quick stops.
This is especially concerning for breeds prone to joint problems, such as Labradors, Border Collies, and German Shepherds. For these dogs, the combination of intense energy and physical stress from fetching a ball can exacerbate conditions like arthritis or hip dysplasia.
2. Abrupt Stops and Sharp Turns: Risky Maneuvers
Picture this: your dog is chasing a ball at full speed. Just as they’re about to grab it, the ball bounces unexpectedly, forcing them to twist, turn, or stop abruptly. While this athletic display might look impressive, it’s also a recipe for injury.
The sudden decelerations and rapid changes in direction during a game of fetch can strain ligaments and joints, particularly the cruciate ligament in the knee. Cruciate ligament injuries are a leading cause of hind-limb lameness in dogs, and a study in the Journal of the American Veterinary Medical Association (2018) found that activities involving rapid stops and turns significantly increase the risk of these injuries.
Such injuries don’t just mean a trip to the vet—they often require surgery and lengthy recovery periods, which can be stressful for both you and your dog.
3. The Impact on Mental Health
Dogs are natural chasers, thanks to their prey drive, but endless fetch can push this instinct into overdrive. Some dogs become so fixated on chasing the ball that they enter a state of hyperarousal, making it difficult for them to relax even after the game ends.
Dr. Karen Overall, a leading veterinary behaviorist, explains that high-arousal activities like fetch can elevate cortisol levels, the body’s stress hormone. While short bursts of cortisol are normal, chronic elevation can impact a dog’s immune system, digestion, and behavior.
Over time, this can lead to obsessive behaviors. You might notice your dog whining or pacing until the ball is thrown again, unable to focus on anything else. Instead of a fun bonding experience, fetch can turn into a source of stress and frustration.
4. Dental Damage: A Chewed-Up Problem
Have you ever noticed your dog gnawing on a tennis ball while they wait for you to throw it? While this might seem harmless, it could actually damage their teeth. The fuzzy outer layer of a tennis ball acts like sandpaper, wearing down enamel over time.
A study in the Journal of Veterinary Dentistry (2017) highlighted that repetitive chewing on abrasive materials like tennis balls can lead to enamel erosion and even dental fractures. Dogs with damaged enamel may experience tooth sensitivity or pain, making it harder for them to eat or play comfortably.
To make matters worse, some low-quality dog balls are made from materials that are too hard, posing a risk of breaking teeth altogether.

5. Overexertion and Fatigue
Dogs are known for their enthusiasm, and many will keep chasing a ball long after they’re tired. However, overexertion can lead to heat exhaustion, muscle fatigue, or even more severe conditions like heatstroke, especially on warm days.
In a study from the Veterinary Record (2019), researchers observed that dogs engaging in intense exercise like fetch showed significantly higher body temperatures and signs of fatigue compared to dogs in controlled activities.
Older dogs, puppies, and brachycephalic breeds (like Bulldogs and Pugs) are particularly vulnerable to the dangers of overexertion, as they are less able to regulate their body temperature during high-energy activities.
Final Thoughts: Play Smarter, Not Harder
As much as we love to see our dogs happy and active, it’s crucial to consider the long-term effects of our play choices. While throwing a ball might seem like harmless fun, the potential for physical injuries, mental stress, and dental damage makes it worth reconsidering.
Instead of endless fetch sessions, try mixing in low-impact, mentally stimulating activities that keep your dog healthy and happy. By making thoughtful choices about how we play with our pets, we can ensure they enjoy not just today’s game but many more to come.
So, the next time you grab the ball, ask yourself: is this the best way to play? After all, a healthy dog is a happy dog—and that’s the ultimate goal.
Sources Cited:
Frontiers in Veterinary Science (2020) – Study on repetitive strain injuries in dogs.
Journal of the American Veterinary Medical Association (2018) – Research on cruciate ligament injuries.
Journal of Veterinary Dentistry (2017) – Analysis of dental wear from tennis balls.
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