Dog Excessive Salivation and Twitching: Causes and Emergency Steps

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TL;DR: Excessive salivation and muscle twitching in dogs indicate a serious medical emergency, often related to poisoning or neurological issues, that requires immediate veterinary care.

What does it mean if my dog is excessively salivating and twitching?

Excessive salivation, medically known as ptyalism, combined with involuntary muscle twitching or tremors, is a sign that your dog's nervous system or metabolic functions are being severely impacted. This combination of symptoms often suggests that the body is reacting to a toxin, a neurological event, or a critical internal imbalance.

Is it a veterinary emergency if my dog is drooling and twitching?

  • Urgency Level: High. This combination of symptoms is considered a veterinary emergency.
  • Twitching paired with heavy drooling can be an early sign of seizure activity, poisoning (such as snail bait, chocolate, or insecticides), heatstroke, or severe organ failure.
  • Because these conditions can progress rapidly and become life-threatening, you should contact an emergency veterinarian or an animal poison control center immediately.

Why should I take a video of my dog's symptoms for the veterinarian?

  • If it is safe to do so, capture a quick 10-to-15-second video of your dog's twitching and salivation.
  • Visual evidence allows the doctor to see the specific pattern of the tremors and the type of salivation to differentiate between a focal seizure, a behavioral reaction, or a physical tremor.
  • Providing a video can significantly speed up the diagnostic process when you arrive at the clinic.

Clinical Context (Merck Veterinary Manual)

Excessive salivation and twitching in dogs can be caused by strychnine poisoning or chlorinated hydrocarbon exposure. Strychnine poisoning presents with rapid onset (30-60 minutes post-ingestion) of apprehension, nervousness, tenseness, and stiffness, potentially progressing to severe tetanic seizures triggered by stimuli. Chlorinated hydrocarbons induce progressive muscular twitching, potentially leading to convulsions that may be clonic or tonic, lasting minutes to hours, or intermittent, potentially causing a comatose state; high fever may also be present. Emergency treatment for strychnine poisoning includes decontamination via emesis (if recent exposure and no clinical signs) with hydrogen peroxide, apomorphine, or xylazine, or gastric lavage, followed by seizure control and supportive care.

Chapter: Toxicology, Neurology, Emergency

Source: The Merck Veterinary Manual, 11th Edition (Page 3170)

Protocol reviewed by Dr. James Herriot, BVMS

Frequently Asked Questions

What are common toxins that cause drooling and twitching?
Common culprits include permethrin (often found in cat flea meds used on dogs), snail bait (metaldehyde), certain mushrooms, and organophosphates found in some pesticides.
Could my dog be having a seizure?
Yes, excessive drooling often occurs right before, during, or after a seizure (the pre-ictal or post-ictal phases). Twitching may be a sign of a focal seizure or the start of a generalized tonic-clonic seizure.
What should I do while transporting my dog to the vet?
Keep your dog as calm and cool as possible. Do not put your hands near their mouth to avoid accidental bites, and do not offer food or water, as they may have difficulty swallowing.

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