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  • Writer's pictureClaire Corridan

List of Plants and Foods that are Poisonous for Pets

There are numerous commonly found items which when consumed, can be extremely dangerous for your dog. Some of them you might find very surprising. There are too many to list here, so I have created a couple of lists of the most common ones I have seen as a vet.

If in doubt, always telephone your vet or their 24 hour emergency service, for advice.

Most veterinary practices will subscribe to a veterinary poisons helpline, so make sure you know what your dog ate accidentally, and if it is in a packet or bottle, have the ingredients list ready, so they can check if an antidote or particular treatment option is required. Never make your dog vomit without checking with your veterinary practice first (unless you know for definite that the substance is safe in their mouth)- some chemicals or substances can scald the digestive tract, and forcing the dog to vomit exposes the soft tissues in the oesophagus, mouth and tongue to be exposed twice.

In the lists below I have listed some of the common plants and foods which can cause toxicity in dogs. The list of potential foreign bodies (items unsafe for your dog to eat) is endless. Some foreign bodies are small enough and smooth surfaced enough, to pass through the dogs’ gastrointestinal tract without causing any physical or chemical harm. Others can cause damage by: physically damaging the surface, or even penetrating through, the soft gastrointestinal tract, or by leaking their contents into the tract, resulting in uptake into the bloodstream, causing generalised symptoms of poisoning. If in doubt, keep potential foreign bodies out of the reach of your dog and if accidentally ingested, telephone your veterinary clinic, or their 24 hour emergency line for advice immediately.

Dangerous Plants

1. Azalea: Ingestion of just a few azalea leaves can irritate your dog’s mouth and cause subsequent vomiting and diarrhoea. In severe cases, azaleas can cause a drop in blood pressure, coma and even death in dogs.

2. Chrysanthemum: Any plant in the chrysanthemum family is toxic for your dog. The plants contain many compounds that are particularly irritating and dangerous to dogs. Common symptoms of mum ingestion include vomiting, diarrhoea, drooling and incoordination.

3. Foxglove: Every part of the foxglove plant is toxic to your dog, from the seeds to the leaves and the flowers. It is best to keep your dog well away from these plants because ingesting them can cause cardiac failure and even death.

4. Holly: A shrub with dog poisonous berries that cause intense vomiting, diarrhea, depression.

5. Iris: If your dog eats irises, they may salivate, vomit, drool, have diarrhoea or lose energy. This is because the iris contains several compounds that are toxic to dogs. Irises can also cause skin irritation.

6. Ivy: Hedera Helix, more commonly known as English ivy, contains both a naturally occurring steroid known as sapogenin as well as polyacetylene compounds. Both of these naturally occurring chemicals can be irritating to the skin and mucus membranes if chewed or swallowed. All parts of the ivy plant contain the toxins, but they are most concentrated in the leaves.

7. Lillies: While not all types of lilies are highly toxic to dogs, the majority of lilies can cause an upset tummy or other uncomfortable reactions.

8. Poinsetta: Typical symptoms of this dog Christmas plant, if ingested, includes stomach irritation, skin irritation, plus mouth and eye irritation. Other signs include head-shaking, salivation or drooling, or trying to rub the mouth or eyes with the paws.

9. Tulips: The tulip bulb itself is a dog poisonous plant. Symptoms include gastrointestinal problems, drooling, appetite loss, nervous system problems, depression, diarrhoea, appetite loss and convulsions.

10. Yew: This is a highly toxic dog poison plant that can cause death in dogs. The toxin taxine is in Yew, which causes problems such as heart problems, weakness, trembling, a lack of coordination and respiratory problems.

Common Foods which are dangerous for dogs to ingest (some of these might surprise you!):

1. Alcohol: Alcohol has the same effect on a dog’s liver and brain that it has on people, but it takes a lot less to hurt your dog. Just a little beer, spirit, wine, or food with alcohol in it can be bad. It can cause vomiting, diarrhoea, coordination problems, breathing problems, coma, even death. The smaller your dog, the worse it can be.

2. Avocado: The leaves, seed and bark of the plant contain persin which can cause vomiting and diarrhoea in dogs. If consumed whole, the seed can become stuck in the intestines or stomach, and obstruction could be fatal.

3. Bones: Although it seems natural to give a dog a bone, they can choke on it. Bones can also splinter and block or penetrate the soft gastrointestinal tract, causing serious damage, infection and in severe cases death.

4. Caffeine: Keep your dog away from cocoa, chocolate, colas, and energy drinks. Caffeine is also in some cold medicines and pain killers. Caffeine can cause problems with both the heart and the neurological system so if in doubt, get your dog to the vet.

5. Chocolate: The dangerous ingredient in chocolate is theobromine. It's in all kinds of chocolate, even white chocolate. The most dangerous types are dark chocolate and unsweetened baking chocolate. Chocolate can cause a dog to vomit and have diarrhoea. It can also cause heart problems, tremors, seizures, and death.

6. Grapes and Raisins: Grapes and raisins can cause kidney failure in dogs. Even a small amount can make a dog sick. Vomiting, lethargy and weakness are some of the initial signs but the kidney damage occurs quickly but is much slower to repair.

7. Onions and Garlic: all types of onion and garlic, whether dried, raw or powdered, should be kept away from your dog. They damage red blood cells, causing anaemia, weakness, vomiting, and breathing problems.

8. Peaches & Plums: The seeds from these fruits can cause a blockage or obstruction in the gut. They also contain cyanide, which is poisonous to people and dogs. People know not to eat them. Dogs don't.

9. Raw eggs, meat or fish: Raw eggs, meat and fish can have bacteria that causes food poisoning e.g., E-Coli, Salmonella, Listeria, Campylobacter etc. Raw pork, beef, and lamb can contain worms or worm eggs, which are normally killed during the cooking process. Feeding your dog raw meat products puts them at substantial risk of consuming dangerous parasites which can cause severe symptoms. Some fish such as salmon, trout, shad, or sturgeon can also have a parasite that causes "fish disease" or "salmon poisoning disease." The first signs are vomiting, fever, and enlarged lymph nodes. Fully cook eggs/ meat/ fish to kill any bacteria, protozoa or worms that may be present.

10. Xylitol: Sweeties (some brands), chewing- gum, toothpaste, baked goods, and some diet foods are sweetened with xylitol. It can cause your dog's blood sugar to drop and can also cause liver failure. Early symptoms include vomiting, lethargy, and coordination problems. Eventually, your dog may have seizures. Liver failure can happen within just a few days.

Human Medicines or Supplements:

In the same way as we are all aware about keeping medicines and supplements out of the reach of children, it is important that we are ensure they are kept out of the reach of our pets too. There are a variety of symptoms we can expect when a dog accidentally consumes a human medicine, and it will be dependent upon the effect the drug has been designed to induce in people, for example increasing or decreasing blood pressure, increasing or decreasing blood sugars or insulin. It is important to never give your dog any over-the-counter medicine unless your vet tells you to. Ingredients such as acetaminophen or ibuprofen are common in pain relievers and cold medicine, but they can cause serious illness in dogs.

The take home message is be aware (know the common poisons for pets), be careful where you leave or store these items and if your dog accidentally eats any of them, get veterinary advice asap!

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