Botulism in dogs: rare, severe, and easy to miss early

Botulism in dogs remains rare, but a newly published 2026 case report is a reminder that it can be rapidly fatal and easy to miss early. The report describes a 3-year-old Labrador Retriever in Brazil that developed acute flaccid paralysis about 48 hours after possible ingestion of decomposing raw meat scraps; serum testing confirmed Clostridium botulinum type C toxin, and the dog died despite supportive care and mechanical ventilation. The authors say the case adds to concern around exposure to decomposing carcasses, spoiled food waste, and raw meat-based diets, all of which have been linked to canine botulism risk. Standard veterinary references continue to describe canine botulism as an intoxication, not an infection, with diagnosis often based on history and clinical signs because confirmatory testing can be difficult to obtain. (pmc.ncbi.nlm.nih.gov)

Why it matters: For veterinary professionals, the main takeaway is diagnostic vigilance. Dogs with botulism can present with progressive lower motor neuron signs, preserved mentation, dysphagia, reduced blink, urinary retention, and, in severe cases, respiratory failure. Because antitoxin is generally only useful before toxin binds and many dogs present after clinical signs begin, management is usually intensive supportive care, including nursing, nutritional support, bladder management, and ventilation when needed. That makes a detailed exposure history, especially around carrion, garbage, and raw diets, critical when working up acute flaccid paralysis alongside differentials such as myasthenia gravis, acute polyradiculoneuritis, and tick paralysis. (merckvetmanual.com)

What to watch: Expect continued discussion around whether raw meat-based diets deserve more scrutiny in neuromuscular cases, and whether more referral centers will publish canine botulism experience as supportive critical care improves. (pubmed.ncbi.nlm.nih.gov)