My dog ate a flea collar – what should I do?

Updated 2026-09-30 · 1 sources

Based on: Pet Poison Helpline

Call a vet now

Call your vet or the nearest emergency vet right now. Flea collars can contain different active ingredients, including amitraz, organophosphates, carbamates, pyrethrins or pyrethroids.

What to do now

What to do right now

Call your vet or the nearest emergency vet.
Note what, how much and when.
Bring the packaging.
Keep your dog calm.
Remove what is left.

Don't

Do not make your dog vomit unless a vet tells you to.
Do not give any human medicine.

Why it can be dangerous

Flea and tick collars vary in their active ingredient.^[1] These collars often contain amitraz, organophosphates, carbamates, pyrethrins or pyrethroids.^[1]

Signs to watch for

Vomiting
Diarrhea
Drooling
Lethargy
Seizures
High blood pressure
Coma
Dilated pupils

If your pet is struggling to breathe, has collapsed, is having a seizure or can't stand up: go to the nearest vet now.

Not sure how serious it is?

OkPaw asks a few quick questions about your pet and tells you in 30 seconds whether it can wait. Free on Google Play for Android.

OkPaw is on Android now – an iPhone version is on its way.

Common questions

How much is dangerous?

Call your vet or the nearest emergency vet right now.

Which signs should I watch for?

Call your vet or the nearest emergency vet right now.

What should I do now?

Call your vet or the nearest emergency vet right now, note what, how much and when, and bring the packaging.

Sources

Pet Poison Helpline

How this page was made: written with the help of AI from the sources below, then checked claim by claim against those sources. Urgency levels follow OkPaw’s fixed safety rules. It is guidance, not a diagnosis. How we write our pages

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