Why Do My Dogs Back Legs Shake

Why Do My Dog’s Back Legs Shake?

It can be concerning and even alarming when you notice your dog’s back legs shaking. While occasional trembling might not be a cause for immediate concern, persistent shaking or trembling in your dog’s back legs could indicate an underlying health issue that requires attention. Here are some common reasons why your dog’s back legs may shake:

1. Muscle weakness: As dogs age, they may experience muscle weakness, leading to tremors or shaking in their back legs. This is commonly seen in senior dogs and can be managed with exercise, physical therapy, and a balanced diet.

2. Injury or trauma: If your dog has recently suffered an injury or trauma to their back legs, shaking may be a sign of pain or discomfort. It is essential to seek veterinary attention to diagnose and treat the underlying cause.

3. Arthritis: Dogs, especially older ones, can develop arthritis, which causes inflammation and pain in the joints. Shaking in the back legs can be a result of arthritic pain. Your veterinarian may prescribe medications, supplements, or lifestyle changes to alleviate the symptoms.

4. Hypoglycemia: Low blood sugar levels can cause shaking or trembling in dogs. This can occur if your dog hasn’t eaten for an extended period or if they have an underlying health condition, such as diabetes. Feeding your dog a balanced diet and adhering to regular feeding schedules can help prevent hypoglycemia.

5. Neurological conditions: Certain neurological conditions, such as degenerative myelopathy or spinal cord disorders, can lead to shaking or weakness in the back legs. These conditions require a comprehensive diagnosis from a veterinarian and may be managed with medications or physical therapy.

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6. Anxiety or stress: Dogs may exhibit shaking or trembling in their back legs as a response to anxiety or stress. This can be triggered by a change in their environment, loud noises, or separation anxiety. Creating a calm and secure environment for your dog, along with behavioral training or anti-anxiety medications, can help alleviate these symptoms.

7. Poisoning or toxic exposure: Ingesting toxic substances or exposure to certain chemicals can cause shaking in dogs. This can be a medical emergency, and immediate veterinary attention is necessary. Be cautious of household chemicals, plants, and human foods that are toxic to dogs.


1. Is it normal for my dog’s back legs to shake when they’re excited?
Yes, mild trembling or shaking can be a normal response to excitement or anticipation.

2. Should I be concerned if my puppy’s back legs are shaking?
Puppies may experience shaking in their back legs during growth spurts, which is typically normal. However, if the shaking persists or is accompanied by other symptoms, consult your veterinarian.

3. Can dehydration cause shaking in dogs’ back legs?
Yes, dehydration can lead to imbalance and muscle weakness, causing shaking in the back legs. Ensure your dog has access to clean, fresh water at all times.

4. Can certain medications cause shaking in dogs?
Yes, some medications may have tremors or shaking as a side effect. Consult your veterinarian if you suspect your dog’s medication is causing these symptoms.

5. How can I prevent or manage arthritis-related shaking in my dog’s back legs?
Regular exercise, a balanced diet, and joint supplements can help manage arthritis symptoms. Consult your veterinarian for specific recommendations.

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6. Can shaking in my dog’s back legs indicate a seizure?
Seizures typically involve more intense shaking or convulsions throughout the entire body, rather than just the back legs. If you suspect your dog is having a seizure, seek veterinary attention immediately.

7. Is shaking in my dog’s back legs always a cause for concern?
While occasional shaking may not be concerning, persistent or worsening shaking should be evaluated by a veterinarian to determine the underlying cause and provide appropriate treatment.