Toxic Hammerhead Worms Spotted in Ontario!
What pet owners (and garden lovers!) need to know
Hammerhead worms — alien-looking flatworms with a distinctive shovel-shaped head — have been recently spotted in parts of Ontario. They may look fascinating, but these worms are highly toxic and dangerous to pets, wildlife, and even humans!
Why They're a Threat:
They release a neurotoxin called tetrodotoxin (yes, the same as pufferfish!).
This can cause illness if touched or ingested by pets or children.
They prey on beneficial earthworms and disrupt local ecosystems.
Pet Safety Tips:
Don't let pets sniff or eat unknown worms in the garden or on walks.
Wear gloves if you need to remove one — never touch it with bare hands!
Dispose by sealing in a bag with salt, vinegar, or rubbing alcohol.
If you think your pet may have come in contact with one, call us ASAP.
Stay informed. Stay safe. Let's keep our furry friends out of harm's way
Cornwall Animal Hospital — Oakville, ON
(905)842-8800
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