Why Is My Shih Tzu Shaking? Normal Causes and When to Worry
Noticing your Shih Tzu shake, shiver, or tremble can be a little alarming the first time. Most of the time it is completely harmless, but not always, so here is a calm owner’s guide to the usual reasons, and the signs that mean it is time to call the vet.
The usual, harmless reasons
- They are cold. Shih Tzus are small, and a freshly bathed or wet dog, or one in a chilly room, will shiver just like we do. This is the most common reason of all.
- They are excited or happy. Lots of little dogs tremble when they are worked up, like when you walk in the door or they know a treat is coming. It is pure emotion spilling over.
- They are nervous or scared. Thunderstorms, fireworks, the vet’s office, or a strange situation can all bring on a anxious shake.
If your dog is shaking for one of these reasons, is otherwise acting completely normal, and settles once the trigger passes, there is usually nothing to worry about.
The reasons that need attention
- Pain or illness. Shivering can be a sign of pain, a fever, or feeling unwell. If the shaking comes with low energy, hiding, or a hunched posture, take it seriously.
- Low blood sugar. This is worth knowing for small dogs, especially young puppies and tiny adults. A dog who misses meals can drop into low blood sugar, which causes trembling, wobbliness, and weakness. It is an emergency if it progresses.
- Older age and tremors. Some senior dogs develop trembling in the legs. It is often harmless, but it is worth mentioning to your vet to rule out other causes.
- Something they ate. Trembling along with vomiting, drooling, or unsteadiness can mean your dog got into something toxic. Do not wait on that one.
When to call the vet
Use this simple rule: shaking plus anything else is your signal. A happy or chilly dog who is otherwise fine can usually be warmed up and comforted. But shaking that comes with vomiting, weakness, a loss of appetite, unsteadiness, hiding, or that just will not stop deserves a call to your vet, and quickly if your dog seems genuinely unwell. You know your dog. If your gut says something is off, trust it.
Frequently asked questions
Why does my Shih Tzu shake for no reason?
There is almost always a reason, even if it is not obvious. The most common are cold, excitement, and nervousness. If your dog is otherwise acting normal and settles when the trigger passes, it is usually harmless.
When should I worry about my Shih Tzu shaking?
Worry when the shaking comes with other signs, such as low energy, vomiting, weakness, loss of appetite, unsteadiness, or hiding, or when it simply will not stop. That combination calls for a vet visit.
Can low blood sugar make a small dog shake?
Yes. In small dogs and young puppies, a missed meal can cause low blood sugar, which leads to trembling, wobbliness, and weakness. It can become an emergency, so contact your vet if you suspect it.
This article is written from one dog lover to another and is for general information only. It is not veterinary advice and cannot replace an exam by your own veterinarian. If you are worried about your dog, please contact your vet.
