PupkeeperCaution
Dog ate weed killers (herbicides)? What to do
Most weed killers cause only stomach upset if a dog gets into them, but some, like paraquat, can cause severe organ damage.
If your dog ate or touched this, call your vet or a pet poison line now
United States
Poison lines in other countries: United Kingdom, Australia, Canada, New Zealand
What to do now
- Call your vet or a pet poison line now.
- Move your dog away from the product so it can't get more.
- Keep the label and bring it with you. It names the exact herbicide.
Don't
- Don't make your dog vomit unless a vet tells you to.
- Don't let your dog walk on or chew freshly sprayed plants.
Signs to watch for
- Vomiting
- Diarrhea
- Stumbling
- Back-leg weakness
- Eye or skin irritation
- Breathing problems days later (paraquat)
Why
Serious poisoning is rare and usually happens when a dog gets into the product itself. Properly applied sprays are less of a risk, especially once dry.
Sources
Guide reviewed 9 October 2026.
General information from the sources above, not a diagnosis. When in doubt, call your vet.