Skip to main content

Rat Poison (Anticoagulant)

Pet toxin reference — educational information only.
Pet toxins

What to know

Rat Poison (Anticoagulant) — toxicity in dogs and cats

EmergencyApplies to: dogs and cats.

Overview

Rat poison (rodenticide) is one of the most common and dangerous toxins that dogs and cats encounter. There are several types of rat poison, and the treatment varies significantly depending on the active ingredient. Anticoagulant rodenticides (brodifacoum, bromadiolone, diphacinone) prevent blood from clotting, causing internal bleeding that may not become apparent for 2-5 days after ingestion. Bromethalin-based poisons cause brain swelling. Cholecalciferol (vitamin D3) poisons cause kidney failure from calcium overdose. If your pet has eaten rat poison, bring the packaging to the vet - identifying the active ingredient is critical for treatment. Relay bait ingestion and secondary poisoning (eating a poisoned rodent) are also risks.

Symptoms

Lethargy, pale gums, difficulty breathing, internal bleeding, collapse

Typical onset

2-5 days

What to do

Seek emergency care immediately. Bring the packaging - treatment depends on the active ingredient. Symptoms may be delayed days.

This page is educational and does not replace veterinary advice. If your pet may have been exposed, call UVEC at (801) 218-2227 or ASPCA Poison Control at (888) 426-4435.

Live tool

Search more substances

Toxic Substance Checker

Search common toxins and review next steps. If your pet may have ingested something dangerous, call (801) 218-2227 for triage guidance.

53 results · 26 high-severity results

Rat poison (rodenticide) is one of the most common and dangerous toxins that dogs and cats encounter. There are several types of rat poison, and the treatment varies significantly depending on the active ingredient. Anticoagulant rodenticides (brodifacoum, bromadiolone, diphacinone) prevent blood from clotting, causing internal bleeding that may not become apparent for 2-5 days after ingestion. Bromethalin-based poisons cause brain swelling. Cholecalciferol (vitamin D3) poisons cause kidney failure from calcium overdose. If your pet has eaten rat poison, bring the packaging to the vet - identifying the active ingredient is critical for treatment. Relay bait ingestion and secondary poisoning (eating a poisoned rodent) are also risks.

Symptoms
Lethargy, pale gums, difficulty breathing, internal bleeding, collapse
Onset
2-5 days
What to do now
Seek emergency care immediately. Bring the packaging - treatment depends on the active ingredient. Symptoms may be delayed days.
Call us: (801) 218-2227
This tool is informational only and does not replace veterinary advice. If ingestion may have happened, contact us at (801) 218-2227 or ASPCA Poison Control at (888) 426-4435. Utah Veterinary Emergency Center provides same-day urgent care and is not a 24/7 emergency hospital. For life-threatening signs after hours, call (801) 218-2227 for guidance or go to the nearest 24/7 emergency hospital.