Why Does My Dog Chew on Their Leash?

Common Reasons for Leash Chewing

Dogs chew on their leash for several key reasons. Puppies often chew due to teething pain, as new teeth grow in and cause discomfort—just like human babies. Older dogs may chew out of boredom, anxiety, or pent-up energy. The behavior can also stem from a lack of mental stimulation or an inconsistent routine. Some dogs use their mouths to explore their environment, as their sense of taste and touch develops early, even before sight or hearing. This instinctual chewing is rooted in thousands of years of survival, where dogs needed to chew through bone and marrow.

In some cases, leash chewing is linked to frustration or anxiety during walks, especially if the dog feels restricted or overstimulated. The use of harsh training tools like prong or choke collars can worsen this behavior by increasing stress. If your dog chews the leash while walking, it may signal that their basic needs—like exercise, rest, and consistent interaction—are not being met.

How to Stop Leash Chewing with Training

The best way to stop leash chewing is not to punish the behavior, but to teach your dog what they *should* chew instead. Start by offering safe, durable chew toys during walks. If your dog starts chewing the leash, calmly redirect their attention to a chew toy. Use a cue like “chew” or “toy” and reward them with a treat when they switch to the appropriate item. This method works best when done consistently and with good timing.

You can also use a second leash during walks. When your dog starts tugging or chewing on the first leash, drop it while keeping control with the second. This teaches them that chewing doesn’t lead to freedom or attention. Over time, they’ll learn that chewing the leash doesn’t get them what they want.

Preventative Steps at Home and On Walks

Prevention starts with managing your dog’s environment. Keep valuable or dangerous items out of reach when unsupervised. This includes shoes, cords, and household objects. Provide a variety of safe chew toys—like rubber bones, antlers, or veterinarian-approved chews—so your dog has healthy options. Rotate toys to keep them interesting and prevent boredom.

On walks, use longer leashes and engage in games that teach loose-leash walking. These activities offer both physical exercise and mental stimulation, which helps reduce frustration and anxiety. A tired dog is less likely to chew out of boredom or stress. Also, ensure your dog gets enough sleep and consistent daily routines, as lack of rest can increase destructive behaviors.

When to Seek Help

If your dog chews the leash only when they’re anxious or scared, the root cause may be deeper than simple boredom. In such cases, addressing the underlying anxiety is essential. If chewing leads to injury—like broken teeth or intestinal blockages—consult your veterinarian. They can rule out medical issues and help determine if behavioral support is needed.