Why daily nibbles are more dangerous than a single dose
Your 12 kg dog’s repeated exposure means the poison accumulates in his system, even if each piece seems tiny. Anticoagulant rodenticides work by depleting vitamin K, which is essential for blood clotting. With daily intake, his body can’t replenish it fast enough, creating a ticking time bomb. Unlike a one-time ingestion where signs appear within days, this slow buildup means symptoms—like sudden weakness or bleeding—might only show after weeks.
By now, his clotting factors could be critically low, and even minor injuries might lead to uncontrolled bleeding. The real danger is that by the time you notice pale gums or lethargy, significant internal damage may already have occurred. Don’t wait for visible signs; assume his system is compromised and act immediately.
What to expect in the next 48 hours
Even if he seems fine today, the next two days are critical. Anticoagulants cause delayed effects, and bleeding could start anywhere—his lungs, intestines, or even joints. Watch for subtle changes: labored breathing (blood in the lungs), black tarry stools (digestive bleeding), or swelling at the joints. These signs often escalate quickly once they begin.
Because the poison has been ingested over weeks, standard first-aid measures like inducing vomiting won’t help. His body needs sustained vitamin K therapy, likely for a month, to rebuild clotting factors. Blood tests are essential now to assess how much damage has already been done.
Why his weight matters in this scenario
A 12 kg dog is small enough that cumulative doses—even ‘tiny’ amounts—add up fast. Larger dogs might tolerate sporadic exposure better, but at his size, two weeks of daily intake is a severe risk. The poison’s half-life means each new piece resets the countdown to clotting failure.
His liver has been working overtime to process the toxin, which could mask early signs of trouble. Fatigue or slight lethargy might be dismissed as normal, but these are red flags in this context. Any delay in treatment now increases the risk of irreversible organ damage.
The long recovery ahead
Treatment won’t be quick. Even after starting vitamin K, it takes days for his body to produce new clotting factors. He’ll need strict activity restriction—no running or rough play—to prevent spontaneous bleeding during this period. Expect follow-up blood tests to monitor progress.
This isn’t a ‘wait-and-see’ situation. Without intervention, internal bleeding could become fatal within hours once it starts. If he’s eaten bait daily for two weeks, assume he’s already at the danger zone’s edge. Emergency care is the only safe next step.
The step-by-step response, from the first minute to the vet visit, is in our Rat Poison (Rodenticide) Poisoning emergency guide.