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CONTRIBUTOR(S): Vetstream Ltd, Nicola Bates, Fear Free,

Poisoning

Poisoning can occur if a poisonous substance is swallowed (solids or liquids), breathed in (gases) or absorbed through the skin (normally liquids). Poisons are substances that damage the cells in the body. In order to cause harm they must enter, or come into contact with the body. Many poisons are products we use every day and can be found in food, medications, household and garden substances. Accidental poisoning in dogs and cats is usually caused by substances we commonly have around the house, eg human medications, cleaning products and pest control products.

Examples of rat poison ©Vetstream Ltd

How can I prevent my animal from being poisoned?

Almost all cases of poisoning are accidental so the best way to prevent poisoning is to ensure that all poisons are kept out of sight and reach of your pets (and children):

  • Dispose of unwanted medicines safely.
  • Read the product label and follow the instructions for correct use and disposal.
  • Ensure lids are replaced correctly to prevent spillage, if the container is knocked over.
  • Clean up drips and spills promptly.
  • Dispose of empty containers and waste food safely.
  • Put pest control products in pet-proof containers before putting them out.
  • Be vigilant when walking your dog to ensure they do not pick up any unusual things.
Younger animals are more likely to be affected as they often chew strange objects.

How would I know if my pet has been poisoned?

You should be worried that your pet might have been poisoned if you suspect they have eaten, or come into contact with a toxic substance. It's important to contact your vet immediately - even though your pet probably still seems fine. You may be unaware that your pet has been exposed to a toxic substance until they show signs of being unwell. Call your vet if you have any concerns, and urgently if you notice signs such as breathing difficulties, seizures or severe vomiting and diarrhea. Every poison produces different effects, and a poisoned pet may show a number of signs such as:

  • Restlessness or drowsiness.
  • Vomiting and/or diarrhea.
  • Salivation or drooling from the mouth.
  • Breathing difficulties.
  • Muscle tremors, twitching or seizures.
  • Confusion, changes in behavior or an abnormal reaction to sound or light.
  • Hallucinations.
  • Wobbly gait (ataxia).
  • Changes in gum color to blue, pale or even very red.
  • Unusual odors or smells (either on the breath or from contamination on the skin).
  • Bite marks (poisoning can result from a bite or a sting).
  • Burns to the mouth or the tongue.
  • Irritation or inflammation of the skin.
  • Foreign material passed in the stools.

What should I do if I think my pet has been poisoned?

A rapid response is critical in any possible cases of poisoning. If you suspect that your pet may have been poisoned:

  • Protect your pet and remove it from the source of the intoxication.
  • If you can do so safely, remove any suspect material from the animal's mouth.
  • Contact your veterinarian for further advice and be prepared to take your pet and the suspect material, product details or product to the hospital.
  • Be very cautious handling your pet and don't let other people handle your pet (disorientated or frightened animals may become aggressive and other people may be contaminated with the poison).
The sooner a poisoned animal receives treatment, the higher its chances of recovery. If you think that your pet has been poisoned, then contact your veterinary emergency service immediately; your pet's life may well depend on it. It is always better to phone in advance to warn the surgery that you are on your way and give your veterinarian details on what may have been ingested. This will give them time to prepare everything they need, and for you to check that there is someone available at the surgery to help you. In most cases the best course of action is to get your pet to the veterinary practice as soon as possible. In some cases, your vet may direct you to give some immediate first-aid treatment at home. If your pet has a toxic substance on their skin or coat your vet may advise placing a buster collar on your pet to prevent your pet from ingesting the substance and may advise that your pet is showered/bathed immediately. It is essential that you wear protective clothing when handling them.

Should I try to make my pet vomit if I think it has eaten something poisoning?

No. Call your vet immediately for advice. Your vet will decide whether it is appropriate to make your dog vomit and will use the appropriate medications to do this as safely as possible. It is not always appropriate to induce vomiting, particularly if an animal has already been sick, is unconscious, very sleepy or depressed, has eaten a corrosive (acidic or alkaline) product or has eaten a petroleum-based product. If your dog has already vomited, collect a sample and take it to your veterinarian in case it is required for identification of a possible intoxicant.

What information will help my veterinarian?

On arrival at the veterinary practice someone will assess your pet immediately and make sure that their condition is stable before any other treatments are instigated. Your veterinarian will want to know:

  • If your pet has known access to possible poisons.
  • If so what poison, is a sample or container available?
  • When your pet had access to the poison (how long ago)?
  • How much was eaten or drunk (how much is missing from the container)?
  • Has your pet shown any signs of being unwell?
  • If your pet is receiving any medication or has any pre-existing medical conditions?
If you are able to take a sample of the poison or any packaging associated with it then this may help your veterinarian to provide the best care for your pet.

What are the common causes of poisoning in pets?

One of the most common causes of accidental poisoning in pets is owners giving human medication to their pet for pain relief. Never give medication to your pet unless instructed to do so by your veterinarian.

Ibuprofen

Although this painkiller can be bought in any chemist for humans it is extremely toxic to dogs (and cats). Just one tablet can cause stomach ulceration, liver damage, kidney failure and death. It is one of the most common causes of poisoning in dogs.

Paracetamol

When administered as an overdose, paracetamol cannot be broken down safely and toxins quickly build up to dangerous levels.

Slug pellets

The most common active ingredient in slug pellets is metaldehyde. Dogs often find slug pellets attractive and will wander around the garden hoovering up pellets from treated areas. The poison causes excitement and seizures followed by depression and collapse. Avoid the use of chemicals in the garden if you have pets, or confine your pets indoors or fence off treated areas.

Rat poison

Many rat poisons contain anticoagulants (such as difenacoum or bromadialone). Dogs often eat the poison directly but can also be poisoned by eating dead or dying rodents. Animals may remain well for several days after eating the bait as the poison takes effect. Repeated small doses are more toxic than a single large dose. Signs include depression, weakness, breathing problems, and prolonged bleeding from any minor wounds or abrasions. Poisoned animals can bleed to death without treatment.

Cannabis

Dogs may eat cannabis, and although they can show signs of toxicity for several days, it rarely causes serious long term consequences. Most affected dogs become excited and may salivate a lot. Sometimes affected pets will seem disorientated and may hallucinate - just as in people, appetite may be increased.

Food stuffs (Raisins, Onions and Chocolate)

Pets can be poisoned by human foodstuffs, and these poisonings can be fatal. Raisins (and sultanas, currants and grapes) cause damage to the kidneys, chocolate poisoning affects the brain and the heart, and onion poisoning can cause anemia. In animals which are susceptible to these poisonings even a small amount (a piece of fruit cake, a few squares of dark chocolate) can have serious effects.

Adder bites

Snake bites are most common in late spring and summer when snakes are active. Dogs can become unwell very quickly after an adder bite with pain and progressive local swelling. Treatment often includes administration of antivenom, fluids and pain relief.

Lilies

Plant poisonings are more common in cats than in dogs. Unfortunately, even a little pollen or any part of this plant is extremely toxic to the kidneys. Prompt treatment is essential in all cases of lily exposure.

Anti-freeze (ethylene glycol)

Antifreeze is palatable to dogs and cats. The initial signs are very non-specific (vomiting, wobbliness/weakness, thirst) and are easily missed. These are followed by kidney failure, seizures and coma. Treatment with an antidote may be possible, but only if started very soon after ingestion.

Toad poisoning

Most toads are relatively harmless, but all toads have glands in their skin which secrete unpleasant substances. Animals that have put toads in their mouth or licked toads show excessive salivation and may paw at their mouth. Usually, the signs resolve without treatment. In more severe poisonings signs include weakness, limb swelling and seizures.

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