Why Do Dogs Shake?

Why Do Dogs Shake?

If you’ve noticed your dog shaking, you might be curious about what’s causing it. Dogs shake for lots of different reasons, and in many cases it’s completely normal behaviour. That said, sometimes it can point to something that needs attention.

Here’s what you need to know.

What Does It Mean When a Dog Shakes?

There are several common reasons why dogs may shake or tremble:

  • Feeling cold or damp – Dogs can shiver when they’re chilly or wet. Drying them off or keeping them warm can help.

  • Fear or stress – Loud sounds like fireworks or thunderstorms can make dogs feel anxious, leading to shaking.

  • Excitement – Some dogs tremble when they’re very happy, such as when you arrive home.

  • Pain or discomfort – Shaking can sometimes be a sign your dog isn’t feeling well.

  • Health conditions – Certain medical issues may cause ongoing trembling.

  • Letting go of tension – Dogs may shake to release physical or emotional stress.

Why Do Dogs Shake Off?

That familiar full-body shake isn’t just random. It’s actually a highly efficient way for dogs to dry themselves. Studies have shown that dogs can shake off around 70% of water from their coat in just a few seconds.

Dogs may also shake:

  • After waking up

  • Following exercise or play

  • When transitioning between activities

This behaviour can act as a reset, helping them shift from rest to activity or shake off lingering stress.

Why Do Dogs Shake Their Heads?

If your dog is repeatedly shaking their head, it’s often a sign something is bothering their ears. This could include:

  • Ear infections

  • Ear mites

  • Minor injuries

  • Debris such as grass seeds

Dogs with floppy ears tend to experience ear problems more often. If this behaviour continues, it’s worth getting it checked by a vet.

Puppy Shaking

Shaking in puppies should always be monitored carefully. While it can sometimes be harmless, it may also indicate underlying conditions such as:

  • Cerebellar hypoplasia, which affects coordination

  • Hypomyelination, which impacts nerve function

If your puppy is also unsteady on their feet or struggling to balance, a veterinary check is important.

Why Is My Dog Shaking a Lot?

While occasional shaking is normal, frequent or intense trembling may signal a health issue. Possible causes include:

  • Nausea (you might notice drooling or excessive swallowing)

  • Pain (often alongside changes in behaviour or repeated licking of one area)

  • Weak muscles or tiredness

  • Epilepsy

  • Toxic exposure

  • Ear problems

  • Kidney issues

  • Generalised Tremor Syndrome (GTS)

Although uncommon thanks to vaccines, canine distemper can also cause shaking in unvaccinated dogs.

In older dogs, shaking can be linked to reduced muscle strength, particularly in the legs.

When Should You Be Concerned?

Shaking is often harmless, but you should speak to a vet if:

  • It continues over time or gets worse

  • Your dog shows other symptoms

  • Your dog is very young

  • The shaking seems unusual for them

If you’re unsure, it’s always safest to get professional advice. It’s better to check early than overlook a potential issue.

By understanding the different reasons behind shaking, you’ll be better equipped to know when it’s normal and when your dog might need extra care.

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