PupkeeperToxicEmergency
Rat and mouse bait (outdoors) and dogs: what to do
Highly toxic. Rat and mouse baits in parks and yards can cause deadly bleeding, brain swelling or organ failure; some have no antidote.
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.
- Bring the bait package or label, or a photo of it, so the exact poison can be identified.
- Get help even if your dog seems fine; some baits take days to act.
Don't
- Don't guess the poison from the bait's color or shape.
Signs to watch for
- Vomiting, sometimes with blood
- Diarrhea
- Nosebleeds or other bleeding
- Trouble breathing
- Stumbling or tremors
- Seizures
- Coma
When signs appear: Depends on the poison; blood-thinning baits usually cause bleeding 3-7 days later
Why
Baits use different poisons, such as blood thinners, bromethalin, vitamin D3 or phosphides, and you can't tell which from the color or shape. Dogs can also be poisoned by eating poisoned rodents.
Sources
- Pet Poison Helpline: Mouse and Rat Poison
- Pet Poison Helpline: Toxic Yard Items for Pets
- VCA Animal Hospitals: Anticoagulant Rodenticide Poisoning in Dogs
Guide reviewed 9 October 2026.
General information from the sources above, not a diagnosis. When in doubt, call your vet.