If your dog ate rat poison, treat it as an emergency and act right now — even if your dog looks completely fine. The most common rat poisons cause internal bleeding that is delayed for days, so a normal-seeming dog can still be in serious danger. Your single most important job is to find the product packaging (or a clear photo of it) so the vet knows exactly which toxin is involved, because the treatment is completely different for each type. Call ASPCA Animal Poison Control at 888-426-4435 or Pet Poison Helpline at 855-764-7661 (a consultation fee applies) and get to a veterinarian.
Why Identifying the Product Is Everything
"Rat poison" is not one thing. There are four different classes of rodenticide, each with a different active ingredient, a different timeline, and — critically — a completely different treatment. You cannot tell them apart by the color or shape of the bait, so the packaging is the only reliable way to know what your dog swallowed [1].
Grab the box, bag, or bait station and look for the product name and active ingredient [1] (and the EPA registration number, if listed). Bring the packaging (or a photo of it) with you to the vet or have it in hand when you call poison control. This one piece of information can decide whether your dog gets a life-saving antidote or the wrong treatment entirely.
The Four Types of Rat Poison and What Each One Does
Anticoagulants (the most common)
Active ingredients include brodifacoum, bromadiolone, difethialone, and warfarin. These poisons interfere with vitamin K1, which the body needs to make clotting factors, and drive it too low to stop bleeding — the result is uncontrolled internal bleeding [2]. The danger is that signs are delayed: after your dog eats the bait it takes one to two days for existing clotting factors to be used up, then another three to seven days before bleeding signs appear [2]. This is why a dog that "seems totally fine" today can be bleeding internally later this week. The good news: there is a specific antidote, vitamin K1, and treated dogs generally do well.
Bromethalin (a neurotoxin — no antidote)
Bromethalin is completely different. It attacks the nervous system and causes the brain to swell, leading to muscle tremors, lack of coordination, seizures, and hind-end paralysis. Sudden severe signs can appear around 10 hours after ingestion, or a slower form may show up 1 to 4 days later [3]. There is no specific antidote — treatment is limited to blocking absorption and controlling brain swelling — which makes fast decontamination essential [3].
Cholecalciferol (Vitamin D3 — a narrow margin)
Cholecalciferol produces dangerously high calcium in the blood, which hardens soft tissue and causes progressive kidney damage. Signs generally develop within 18 to 36 hours and include depression, excessive thirst, increased urination, and vomiting [3]. It doesn't take much to reach a toxic dose, and there is no simple antidote — treatment involves aggressive supportive care and blood-calcium monitoring, often for weeks [3].
Zinc and Aluminum Phosphides
In the acidic stomach, these compounds release phosphine gas, which is dangerous when inhaled and causes fluid to build up in the lungs. Signs begin rapidly — vomiting, abdominal pain, difficulty breathing, and convulsions [3]. Importantly, the gas can also harm people: it can be released from your dog's vomit, so if a person is exposed to the vomit, contact a human poison control center [1].
Symptoms of Rat Poison Poisoning
What you see depends entirely on which poison your dog ate — and with anticoagulants you may see nothing at all for days.
- Anticoagulant bleeding: weakness, pale gums, coughing (sometimes with blood), difficulty breathing, a swollen belly, bruising, or bloody/dark stools [2].
- Bromethalin (brain): tremors, wobbling or loss of coordination, seizures, or paralysis of the back end [3].
- Cholecalciferol (calcium/kidneys): depression, loss of appetite, excessive thirst, and increased urination [3].
- Phosphides: rapid vomiting, abdominal pain, trouble breathing, and convulsions [3].
The absence of symptoms is not reassurance. With the most common (anticoagulant) baits, the dog is silently using up clotting reserves for days before any bleeding shows [2].
What to Do Right Now
- Get the packaging. Find the box, bag, or bait station and note the product name and active ingredient [1] (and the EPA registration number, if listed) — this determines treatment.
- Call for help immediately. Contact ASPCA Animal Poison Control (888-426-4435) or Pet Poison Helpline (855-764-7661); a consultation fee applies. They will tell you the next step for your specific product.
- Do NOT induce vomiting on your own. Whether making your dog vomit is safe depends on the poison, the amount, and the timing — inducing emesis is only appropriate within a few hours of ingestion and should be done under veterinary direction [4]. Wait for professional guidance.
- Go to a veterinarian. Bring the packaging (or a photo) with you.
What the Vet Will Do
Treatment is guided by the specific product. For a recent ingestion, the vet may perform decontamination — inducing vomiting (appropriate only within about 4 hours) and giving activated charcoal — which should always be done by a professional [4].
For anticoagulant poisoning, the vet gives the antidote, vitamin K1, a prescription medication that can NOT be bought over the counter [5]. Because long-acting "superwarfarin" baits stay in the body a long time, vitamin K1 is continued for weeks — roughly a 28-day course is standard [4], and Pet Poison Helpline notes it takes about 30 days of continuous vitamin K1 before a dog is considered safe [5]. The vet also monitors blood clotting using prothrombin time (PT): PT elevates first and is typically checked about 48 hours after ingestion, then rechecked a few days after stopping the antidote to confirm it has normalized [4]. For bromethalin, cholecalciferol, and phosphides — which have no specific antidote — care is supportive and targeted at the specific toxin [3].
With prompt treatment, most dogs poisoned by anticoagulant rodenticides recover; dogs that develop more serious bleeding may need intensive care and have a higher risk [2].
When to See a Vet
Any suspected rat poison ingestion is an emergency — go now, do not wait for symptoms.
- Your dog ate, chewed, or may have swallowed any rodenticide bait — even if it seems completely fine [2].
- You see bleeding signs: pale gums, weakness, coughing blood, bloody or dark stools, a swollen belly, or unexplained bruising [2].
- You see neurologic signs: tremors, wobbling, seizures, or hind-end paralysis [3].
- You see thirst-and-kidney signs: excessive drinking, increased urination, vomiting, or depression [3].
- You are not sure which product or how much was eaten — call poison control and head to the vet regardless [1].
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Frequently Asked Questions
How long after eating rat poison do dogs show symptoms?
It depends entirely on the type. With the most common anticoagulant baits, signs are delayed: it takes one to two days for the body's clotting factors to be used up, then three to seven days before bleeding actually appears [2]. Bromethalin can cause sudden signs around 10 hours after ingestion or a slower onset over 1 to 4 days [3], and cholecalciferol signs usually develop within 18 to 36 hours [3]. Because symptoms are delayed, never "wait and see" — act as soon as you suspect ingestion.
Can a dog survive eating rat poison?
Yes — especially with anticoagulant poisoning, which is the most common type and has a specific antidote. With prompt treatment most dogs recover, though those that develop more serious bleeding may need intensive care and face a higher risk [2]. Survival for all types depends heavily on how quickly the dog is treated, which is why identifying the product and getting care early matters so much.
What are the signs of rat poison in dogs?
The signs vary by poison. Anticoagulants cause bleeding: weakness, pale gums, coughing (sometimes blood), a swollen belly, bruising, or bloody/dark stools [2]. Bromethalin causes tremors, incoordination, seizures, or paralysis [3]. Cholecalciferol causes depression, excessive thirst, and increased urination [3]. Phosphides cause rapid vomiting, abdominal pain, and breathing trouble [3].
Should I make my dog throw up?
Not on your own. Whether inducing vomiting is safe depends on the specific poison, the dose, and how long ago it was eaten — it is only appropriate within a few hours of ingestion and should be done under veterinary direction [4]. Call ASPCA Animal Poison Control or Pet Poison Helpline first and follow their instructions rather than acting on your own [5].
Why is finding the product packaging so important?
Because the four rodenticide types need completely different treatments, and you cannot tell them apart by the look of the bait [1]. The product name and active ingredient on the packaging (and the EPA registration number, if listed) tell the vet whether your dog needs the vitamin K1 antidote (anticoagulants) or a different approach entirely. Bring the box or a photo with you.
Is there an antidote for rat poison?
Only for anticoagulant rodenticides. Vitamin K1 is the antidote for that type — a prescription medication given for weeks, since long-acting baits linger in the body and it takes roughly 30 days of continuous treatment before a dog is considered safe [5]. Bromethalin, cholecalciferol, and phosphide poisonings have no specific antidote and are treated with supportive care [3].
My dog ate rat poison but seems fine — is that normal?
Yes, and it is exactly why this is dangerous. With anticoagulant baits, a dog silently burns through its clotting reserves for one to two days, and bleeding does not appear until three to seven days later [2]. A normal-looking dog can still be in serious trouble, so treat any suspected ingestion as an emergency and call poison control right away.
Can rat poison harm me or my family?
It can, particularly zinc and aluminum phosphides, which release toxic phosphine gas in the stomach. That gas can also be released from your dog's vomit, so if a person is exposed to the vomit, contact a human poison control center [1]. When in doubt, let veterinary professionals handle decontamination.