As devoted pet parents, we’ve all experienced moments when our beloved furry companions exhibit this curious behavior during various activities. While occasional leg shaking may be considered normal, it can also raise concerns when it becomes excessive or occurs at rest. Join us as we explore the possible reasons behind this phenomenon, from natural causes to potential underlying health issues. Understanding the factors contributing to leg shaking in dogs can help us ensure the well-being and happiness of our canine friends.

Causes of Dogs Back Leg Shaking

Leg Shaking

Natural Causes

Various natural factors can cause back-leg shaking in dogs. These reasons include:

  • Muscle Fatigue: Dogs, like humans, can experience muscle fatigue after exercise or extended physical activity. Shaking their back legs may be a normal response to this tiredness.
  • Excitement: When dogs get excited, their bodies can respond with leg shaking. It’s similar to how some people tremble when excited or happy.Anxiety or Nervousness: Just like humans, dogs can also feel anxious or nervous. This anxiety can lead to back leg shaking as a physical manifestation of their emotional state.
  • Cold Temperatures: Dogs may shake their back legs in response to cold weather. This shaking helps them generate body heat and keep them warm.
  • Stretching: Sometimes, dogs shake their legs after pulling. It’s a natural reflex that can help relieve muscle tension.
  • Age: As dogs age, they may experience age-related muscle weakness or arthritis, which can cause their legs to shake.
  • Hunting Instinct: Some dogs have a strong hunting instinct, and their legs may shake in anticipation or excitement while tracking scents or watching potential prey.

Muscle atrophy

Muscle atrophy causes back leg shaking in dogs because weakened muscles cannot support the limbs properly. When muscles become inactive or unused for an extended period, they lose mass and strength, leading to atrophy. Consequently, the dog’s hind legs lack the necessary stability and control, resulting in involuntary shaking or trembling when trying to stand or move. The reduced muscle strength also affects the dog’s ability to maintain balance and coordinate movements, further contributing to the shaking in the back legs.

Nerve Disorders

Nerve disorders cause back-leg shaking in dogs. When there is a problem with the nerves that control the muscles in the hind legs, it can lead to involuntary shaking or trembling. These nerve issues disrupt the proper communication between the brain and the muscles, affecting their coordination and causing the back legs to shake. The lack of precise nerve signals to the muscles results in instability and difficulty in controlling movements, leading to the shaking observed in the dog’s back legs.

Metabolic Disorders

Metabolic disorders cause back-leg shaking in dogs. An issue with the dog’s metabolism can affect the balance of essential substances and nutrients in the body, leading to abnormal muscle function. These metabolic imbalances can disrupt the proper functioning of the muscles in the hind legs, causing them to shake involuntarily. The altered metabolic state may also result in weakness or instability in the back legs, contributing to the observed trembling in the dog’s hind limbs.

Autoimmune Disorders

Autoimmune disorders in dogs can lead to shaking in their back legs due to the immune system attacking its tissues. This attack can affect the nerves and muscles responsible for coordinating leg movements, leading to involuntary shaking or tremors. As a result, dogs may experience difficulty walking or standing steadily, and the severity of the oscillation can vary depending on the specific autoimmune condition and its progression.

Infectious disorders

Infectious disorders can cause back-leg shaking in dogs. When a dog contracts an infectious disease, it can lead to various symptoms, including neurological issues. Some infections can directly affect the nervous system, disrupting the proper communication between the back legs’ brain and muscles. This disruption can result in involuntary shaking or tremors in the hind limbs due to the impact on muscle control and coordination. In some cases, the infection may also lead to inflammation in the muscles or nerves, further contributing to the observed shaking in the dog’s back legs


Parasites can cause back leg shaking in dogs. When dogs are infested with certain parasites, these organisms, including the nervous system, can affect their overall health. Some parasites can invade the muscles or nerves, disrupting their normal function. As a result, the affected dog may experience muscle weakness, tremors, or involuntary shaking in the back legs due to the impact on muscle control and coordination. The presence of parasites can lead to inflammation and damage to the nervous tissues, further contributing to the observed shaking in the dog’s hind limbs.


When a dog’s blood sugar levels drop below average, it deprives the muscles of the necessary energy to function correctly. As a result, the dog may experience muscle weakness and tremors, particularly in the back legs. Insufficient glucose in the bloodstream impairs the muscles’ ability to contract and relax properly, leading to involuntary shaking or trembling in the hind limbs. Immediate attention and appropriate measures, such as providing glucose or addressing the underlying cause, are essential to stabilize the dog’s blood sugar levels and alleviate back-leg shaking.

Injury or trauma

When a dog experiences physical trauma or sustains an injury to the back or hind legs, it can lead to damage to the muscles, nerves, or bones. This damage disrupts the normal functioning of the affected tissues, leading to muscle weakness and instability in the back legs. As a result, the dog may exhibit involuntary shaking or tremors in the hind limbs due to pain and impaired coordination. Prompt veterinary evaluation and appropriate treatment are crucial to managing the injury or trauma and alleviating the back leg shaking, allowing the dog to recover and regain proper mobility.

Treatments of Dogs back leg shaking 

Dogs back leg shaking

The treatments for back leg shaking in dogs include:

  • Identifying and addressing the underlying cause: Accurate diagnosis is crucial to determine the specific reason for the back leg shaking. Treating the root cause, whether a medical condition, injury, or stress-related, is essential for effective management.
  • Medications: Depending on the cause, veterinarians may prescribe medications to alleviate symptoms and improve the dog’s condition. These may include anti-inflammatory drugs, muscle relaxants, or medications to manage underlying health issues.
  • Physical therapy: Physical therapy and rehabilitation exercises can help strengthen the muscles in the back legs, improve coordination, and reduce shaking. This can be particularly useful for dogs recovering from injuries or muscle weakness.
  • Dietary adjustments: For certain conditions like hypoglycemia, a change in diet may be necessary to maintain stable blood sugar levels and reduce back-leg shaking.
  • Stress management: If anxiety or stress is the cause of the shaking, behavior modification techniques, calming environments, and, in some cases, anti-anxiety medications can be used to alleviate stress.
  • Parasite prevention: Regular deworming and parasite prevention measures are essential to avoid parasitic infections that may lead to back-leg shaking.
  • Supportive care: Providing a comfortable and safe environment for the dog during its recovery can aid in the healing process and reduce stress.

Frequently Asked Questions about Dogs back Leg Shaking

Are there specific breeds more prone to leg shaking during activities?

Certain breeds of dogs tend to experience leg shaking during activities. Examples include Chihuahuas, Greyhounds Yorkshire, and Terriers.

What should I do if my dog’s back legs shake excessively during exercise?

If your dog’s legs shake excessively during exercise, it’s crucial to stop the activity immediately and allow your dog to rest. Schedule a visit to the veterinarian to rule out any underlying health issues or potential injuries causing the shaking.

Is leg shaking in dogs more prevalent during specific weather conditions?

Leg shaking in dogs may be more prevalent during cold weather conditions, as the cold can cause muscles to contract and shiver. Additionally, dogs may shake their legs during hot weather to dissipate heat and cool down their bodies.

How can I differentiate between normal muscle fatigue and abnormal leg shaking in dogs?

To differentiate between normal muscle fatigue and abnormal leg shaking in dogs, observe their behavior during and after physical activity. Normal muscle fatigue typically resolves with rest, whereas abnormal shaking may persist or worsen.

Can certain medications or treatments lead to dogs back leg shaking?

Medications that affect the central nervous system or have muscle-related effects may trigger tremors or shaking. If you notice leg shaking after starting a new medicine or treatment, consult your veterinarian to assess if it’s related to the prescribed treatment and explore alternative options.

Can allergies or food sensitivities trigger dogs back leg shaking?

Yes, allergies or food sensitivities can trigger leg shaking in dogs. Specific allergens or ingredients in their diet can cause an inflammatory response, leading to muscle tremors or shaking. If you suspect your dog’s leg shaking is related to allergies or food sensitivities, consult a veterinarian to conduct proper testing and recommend appropriate dietary changes or treatments.

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