Why do dogs shiver?

By HotBotUpdated: July 18, 2024

Dogs are known for their expressive and often mysterious behaviors, one of which is shivering. While it can be concerning to see your furry friend tremble, it's important to understand that shivering in dogs can stem from a variety of causes. This comprehensive guide explores the multifaceted reasons behind why dogs shiver, ranging from common to rarely known factors.

Common Reasons for Shivering

Cold Weather

Just like humans, dogs are susceptible to cold temperatures. Shivering is a natural response that helps generate body heat when a dog is cold. While some breeds, like Huskies and Malamutes, are better equipped to handle cold weather, others, especially those with short hair or no undercoat, may shiver more frequently in chilly conditions.

Anxiety and Stress

Shivering can also be a sign of anxiety or stress. Dogs may tremble when exposed to unfamiliar environments, loud noises, or stressful situations such as visits to the vet. This type of shivering is often accompanied by other signs of anxiety, including panting, whining, and hiding.

Excitement

Excitement can also trigger shivering in dogs. When dogs are overly excited, their adrenaline levels spike, causing them to tremble. This is often seen when dogs anticipate something enjoyable, like going for a walk or greeting their owners after a long day.

Medical Reasons for Shivering

Fever

A fever can cause a dog to shiver. When a dog’s body is fighting an infection, the immune response can include shivering as the body attempts to regulate its temperature. Additional symptoms of fever may include lethargy, loss of appetite, and nasal discharge.

Hypoglycemia

Low blood sugar, or hypoglycemia, is another medical condition that can cause shivering. This is particularly common in small breed puppies and can be very serious if not addressed promptly. Symptoms include weakness, confusion, and seizures.

Generalized Tremor Syndrome (GTS)

Also known as "white dog shaker syndrome," GTS is a condition that causes full-body tremors in small breed dogs, particularly white ones. The exact cause is unknown, but it is believed to be autoimmune in nature. Treatment usually involves corticosteroids and can significantly reduce symptoms.

Pain

Dogs may also shiver due to pain. This can be due to a variety of conditions, including arthritis, injuries, or internal issues. Observing for other signs of pain, such as limping, whining, or reluctance to move, can help determine if pain is the cause of shivering.

Environmental and Situational Factors

Poisoning or Toxicity

Exposure to toxins or poisons can cause a dog to shiver. Common household items like chocolate, certain plants, and chemicals are toxic to dogs. Symptoms of poisoning often include vomiting, diarrhea, and seizures, necessitating immediate veterinary care.

Medications

Some medications can have side effects that cause shivering. If your dog starts to shiver after beginning a new medication, consult with your veterinarian to see if this could be a side effect or if an alternative treatment is available.

Behavioral and Psychological Factors

Separation Anxiety

Dogs that suffer from separation anxiety may shiver when they are left alone. This type of anxiety is often accompanied by other behaviors such as barking, destructive chewing, and house soiling. Behavioral therapies and sometimes medications can help manage separation anxiety.

Past Trauma

Dogs with a history of abuse or neglect may shiver due to psychological trauma. These dogs require a lot of patience and consistent, gentle care to help them overcome their fears and anxieties. Professional training and behavioral therapy can be highly beneficial in such cases.

Rare and Little-Known Causes

Hereditary Conditions

Some breeds are genetically predisposed to conditions that cause shivering. For example, certain types of terriers may inherit a condition called "episodic falling syndrome," which can cause tremors and coordination issues. Understanding your dog’s breed-specific health risks can provide insight into their behaviors.

Canine Distemper

Canine distemper is a viral disease that can cause severe symptoms, including shivering. It primarily affects puppies and unvaccinated dogs, leading to respiratory, gastrointestinal, and neurological issues. Vaccination is crucial to prevent this potentially fatal disease.

Age-Related Shivering

Older dogs may shiver more frequently due to age-related conditions like arthritis or general muscle weakness. As dogs age, their bodies become less efficient at regulating temperature and managing pain, leading to increased instances of shivering.

When to See a Veterinarian

While occasional shivering may not be cause for concern, persistent or severe tremors warrant a veterinary consultation. Documenting the circumstances and any accompanying symptoms can help your veterinarian diagnose the underlying cause more effectively.

Understanding why dogs shiver involves considering a broad spectrum of potential causes, from environmental and psychological factors to more serious medical conditions. With careful observation and, when necessary, professional veterinary guidance, you can ensure your dog's health and well-being. The intricate tapestry of canine behavior often leaves us pondering the depths of their experiences, inviting us to continually learn and empathize with our four-legged companions.

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