Rat poison in dogs: recognise symptoms and act immediately

Rats and mice seek shelter in buildings more often in autumn. This also increases the risk from bait. Rat poison is not a single substance. Depending on the active ingredient, it can cause bleeding, nerve damage or kidney failure.

Rat poison includes different groups of active ingredients. Anticoagulants can cause internal bleeding. Other products affect the nervous system or contain high doses of vitamin D, which can disrupt calcium balance and damage the kidneys. Zinc phosphide is also used as an active ingredient. Treatments differ considerably.

Your vet therefore needs to know as precisely as possible which product was ingested. Bait colour or shape is not sufficient for identification. Bring packaging, a photo, the product name and active ingredient details. If your dog may have eaten a poisoned mouse or rat, mention that during the call too.

With some baits, the dog initially appears completely normal. Clotting problems may only become apparent days later. Possible signs include:

Different active ingredients cause different symptoms. The absence of bleeding therefore does not mean your dog is safe.

Call a veterinary practice or clinic immediately and set off as instructed. Report weight, suspected amount, time and product. If your dog already has symptoms, say so directly on the phone. Secure the bait so that no other animal or child can come into contact with it.

Do not wait or give vitamin K, activated charcoal, oil, milk or other remedies on your own initiative. Vitamin K only helps with certain anticoagulant ingredients and must be selected, dosed and monitored correctly. Other poisons require completely different treatment. Vomiting must also only be induced following a veterinary decision.

Before severe organ damage or bleeding has developed, veterinary treatment may, depending on the ingredient, limit absorption, monitor laboratory values and provide targeted care. Once neurological symptoms, shock or kidney failure are advanced, the situation becomes much more difficult. This is why observed ingestion is an emergency even without symptoms.

Where possible, use methods at home that do not endanger dogs or other animals. If bait is unavoidable, it must be in designated, secured stations that your dog cannot reach or destroy. Tell everyone in the household where every bait station is located.

On walks, a lead, a leave-it cue and attentive handling can help. In areas known for poisoned bait, a properly introduced scavenging guard may be useful. Do not touch suspicious objects beside a path with bare hands. Secure the area and inform the responsible authorities or police if deliberately placed poisoned bait is suspected.

Food cannot neutralise rat poison. After poisoning, feeding and any necessary rest depend on the ingredient, organ values and veterinary plan. Once treatment is complete, the daily diet can be tailored individually again.

Note: seek veterinary help immediately after possible rat poison ingestion, even if your dog still seems well.