Dog Shaking or Trembling in San Jose — Causes and When to Worry

Common harmless causes

Cold (especially in small breeds and short-haired dogs), excitement before a walk, fear (thunderstorms, fireworks, vet visits), the shake-off after getting wet, and old-dog tremors in the back legs that come and go. These shakes usually stop when the trigger goes away, the dog acts otherwise normal, and they happen in patterns the owner recognizes.

Serious causes that need a same-day vet

Pain (back, belly, neck, joints), toxin exposure (chocolate, marijuana, mushrooms, certain medications, snail bait, mycotoxins from moldy compost), low blood sugar (especially in toy breeds and puppies), Addison's disease, kidney or liver disease, severe nausea, fever, and early seizure activity. The pattern that worries us: shaking that is new, that does not stop, or that comes with vomiting, weakness, hiding, panting, or a wobbly walk.

Toxin-related shaking — a Bay Area pattern

We see toxin-induced tremors in San Jose dogs from a handful of common sources: moldy food or compost in backyards (especially after rain), snail and slug bait, marijuana exposure, certain human medications dropped on the floor, and rarely, mushroom ingestion from yards or trails. These cases need same-day care and sometimes hospitalization. Bring the suspected packaging or a photo of the substance if you can.

When shaking is actually a seizure

Some seizures look like rhythmic shaking instead of full collapse. The clues that it is a seizure: the dog is unaware of you during the episode, may drool or urinate, looks dazed afterward, or had two or more episodes in a day. Any first-time seizure or cluster of seizures is an ER visit. Read more on /dog-seizure-vet-san-jose.

What we do at the visit

Visit starts with a hands-on neurologic and orthopedic exam, vitals, and a focused history of when shaking started, what triggered it, and any other signs. Workup may include bloodwork, glucose check, X-rays for back or belly pain, and a toxin screen if exposure is suspected. Treatment is targeted to what we find — pain control, anti-nausea medication, glucose support, decontamination for toxins, or hospitalization for severe cases.

Walk in or call

If your dog is shaking and acting otherwise off — quieter than usual, not eating, hiding, panting, vomiting, or wobbly — call ArchVet Winchester at (669) 230-5034 and come in. Open until 10 PM daily, which covers the hours when most worried owners notice the change after work.

Advanced veterinary care in San Jose

ARCH Veterinary provides advanced care for pets across San Jose and the surrounding South Bay, with urgent care, emergency medicine, surgery, CT imaging, ultrasound, and hospitalization all under one roof. Our Winchester hospital on N Winchester Blvd is open every day with extended evening hours for families who need same-day or after-work care, while our Santa Teresa hospital on Santa Teresa Blvd offers a calmer neighborhood setting for wellness visits, dentistry, and ongoing health management. Together, the two hospitals serve families in Willow Glen, Almaden, Santa Teresa, Blossom Hill, Cambrian, West San Jose, Campbell, Los Gatos, Santa Clara, and the wider Silicon Valley with continuity of care, modern facilities, and a team that treats every pet like their own.

Frequently asked questions

Is dog shaking always serious?

No — cold, excitement, and fear cause harmless shaking. But shaking that is new, paired with vomiting, hiding, weakness, or wobbliness is a same-day vet visit.

Can shaking mean my dog is in pain?

Yes. Pain is one of the most common reasons dogs tremble. Back pain, belly pain, and severe joint pain all show up this way.

What toxins cause shaking in San Jose dogs?

Most common: moldy food or compost, snail bait, marijuana, certain medications, and mushrooms. Bring packaging or a photo if exposure is suspected.

How is shaking different from a seizure?

Seizing dogs are usually unaware of you, may drool or urinate, and look dazed afterward. Shaking dogs stay aware. Any first-time seizure is an ER visit.