Foods and beverages that are poisonous or unhealthy to dogs and cats

Protection of Sylvester, Toto, Dolly, Polly

Several fruits, vegetables, nuts, seeds, spices, additives and medicines are toxic to pets.

Some only harm dogs, others only cats, and a few are poisonous to both.

Livestock, rodents, lizards, fish and birds are also not immune to the negative effects of certain foods.

The following is a list of potentially problematic foods that should be stored in a safe place where a curious, inquisitive pet cannot access them and harm themselves.

Prevention is key to protecting the health of the animals you love and care for.




Apple seeds contain cyanide compounds that can poison a pet dog or cat if swallowed or chewed. Cyanide prevents the blood from supplying oxygen to the body’s tissues, causing suffocation.

Indicators of problems in a pet suspected of eating cyanide-containing pits, stems, or leaves include the development of bright red mucous membranes, dilated pupils, respiratory distress, fear or nervousness, and signs of shock. The condition can be fatal if left untreated.


Apricot pits and the stems and leaves of its fruit-producing tree contain the poison cyanide, a potentially fatal toxin for dogs and cats.

The symptoms are the same as when swallowing apple seeds (see above). Swallowed whole pits can also lead to obstruction or obstruction of the intestine, which may require corrective surgery.


Persin, a potentially toxic substance with a fatty acid structure, is present not only in the pit of the avocado and the surrounding fruit, but also in the leaves and bark of the plant.

Although harmless to humans, unless someone has a parsley allergy and is actually thought to be beneficial to women suffering from breast cancer, persin (and therefore avocado) can be fatal if ingested by pets.

Dogs and cats can be lucky and not have any negative symptoms if they are given green fruit; others may vomit, develop diarrhea, or a combination of both. For some, however, the reactions are much more severe.

Along with other pets, such as rabbits, goats, cattle, sheep, horses, birds and fish, some dogs and cats experience heart problems, respiratory complications and eventually death after ingesting foods containing persin. Symptoms of severe reactions, including difficulty breathing, bloating and accumulation of fluid in the chest, abdomen or the area around the heart.

In addition to these problems, mammary gland damage is also observed in highly sensitive animals, including mice, when dried avocado leaves are fed (4, 5). Care must be taken even by the few with silkworms as pets; Parts of the avocado plant are toxic to these unsuspecting leaf manipulators.



The cherry pit, like apricot, peach, pear and plum, contains a form of cyanide.

Swallowed whole, intestinal problems can lead to; swallowed and partially to fully chewed pits can fatally poison dogs and cats.


Oranges, lemons and limes cause vomiting and diarrhea in dogs. Eating grapefruit has the same laxative effect, but is accompanied by symptoms of sensitivity to light and depression.

Cats have identical negative effects when ingesting grapefruit.

Bearded dragons benefit from the occasional consumption of citrus fruits; excessive consumption leads to nutrient imbalance and possible diarrhea.

Black currant

Cats fed blackcurrant can suffer kidney damage due to some unknown but powerful toxin contained in the nipple.

Grapes / Raisins

Responsible for the deaths of several dogs, grapes and / or raisins in just 9 ounces proved deadly. Slightly happier animals may suffer kidney damage that requires urgent medical attention, but eventually survive.

A few lucky dogs may not have any symptoms, but since the reason why grapes in their various forms (fresh, dried, fermented) are fatal to some is not yet known, care must be taken even if the animal has eaten grapes in the past without incident. This is because toxins may be able to accumulate over time and reach dangerous levels only gradually; a small breakfast containing grapes here and there may not be problematic in itself, but in combination it can be deadly.

If dogs eat large amounts of grapes or raisins, it is recommended that they be induced to vomit, have their stomachs pumped, and given activated charcoal and IV fluids.

Like dogs, cats can be asymptomatic or may suffer severe kidney damage if they eat raisins or grapes.


Fruits of fog

The fruits of the mist are highly toxic to pets; one or two can be fatal to your dog or cat.


Peach pit contains cyanide, which is poisonous to dogs and cats.

The symptoms of poisoning are the same as those after eating apple seeds (see above).

Peach pits can be doubly problematic and can cause intestinal obstruction if eaten or swallowed.


The seeds of this fruit are dangerous for dogs and cats and can lead to inflammation of the small intestine or intestinal obstruction.


Plum pits contain cyanides, as well as a potential hazard if placed in the intestines of dogs or cats.

The symptoms of poisoning are the same as those after eating apple seeds (see above).


Oxalates present in the leaves of rhubarb plants have a negative effect on the nervous, digestive and urinary systems of dogs and cats.



Death from broccoli has been observed in various breeds of cattle if it includes more than 25% of the diet; gastrointestinal complications occur when it contains more than 10%.

The problematic substance in broccoli, isothiocyanate, is considered a strong irritant to the digestive system.

Wild onions

Parsley contains disulfides, as well as garlic and onions, which damage the red blood cells of cats and dogs. However, onions are more problematic because they have a much higher concentration of disulfide, followed by garlic and finally garlic.


The sulfoxides and disulfides contained in garlic, whether fresh, cooked or powdered, can damage red blood cells and cause anemia in both dogs and cats.

Signs of anemia include light gums and lethargy.



Mushrooms are available in many varieties; some are highly toxic, while others are harmless.

Unless the owner is a mushroom expert and can’t tell the difference, a dog suspected of eating mushrooms should be closely monitored. (Fungi that grow in backyards are usually toxic).

To be safe, it is recommended that the dog be induced to vomit and give activated charcoal if the fungus is not completely expelled. The wrong types of mushrooms can cause jaundice and liver damage, leading to internal bleeding or seizures, or can have hallucinogenic effects, leading to tremors, seizures and coma.

If the dog vomits on its own or develops diarrhea but has no other symptoms, there is probably no serious harm; however, if gastrointestinal upset is accompanied by excess saliva or tears, decreased pupil size, slow heart rate, depressed activity or lethargy, restlessness, staggering or domestic coma, and no response, medical attention is mandatory.

Although rare cats eat mushrooms, it has been shown to have attracted two poisonous variety, which can kill: muskariyata Amanita and panterinata Amanita . In contrast, dogs are attracted to seven venomous varieties. One, the species Scleroderma , is also fatal to pigs.

The onion

Although considered safe in small amounts, onions in cups or more cause hemolytic anemia in dogs. This is because the disulfides contained in onions damage red blood cells. All forms of onion are dangerous, whether fresh, cooked or dehydrated.

Cats are more sensitive than dogs to onions and may tolerate less.

Signs of problems include pale, light gums and lethargy. Corticosteroids or immunosuppressants can help an animal suffering from onion-induced anemia.



Raw potatoes are coated with the glycoalkanoid solamine, a substance that is poisonous to cats.

Boiled tubers do not give bad effects, but raw potatoes and the stems and leaves of its plant can cause gastrointestinal irritation, bloody stools, lethargy, tremors, paralysis and heart attack.


Tomatoes, as well as stems and leaves, are poisonous to cats. One small tomato is enough to cause serious stomach and intestinal reactions.


Poisonous nuts and seeds


The gastrointestinal system of a dog or cat often finds almonds difficult to digest, which can lead to vomiting and other symptoms of irritation.

Salted nuts can lead to ionic imbalances if eaten in large enough quantities and can even pose a choking hazard if not chewed before ingestion.

Chocolate / Cocoa

Half of all dogs find a dose of chocolate of 100 mg / kg body weight lethal.

However, lower amounts (up to 10% of this lethal dose) can cause different levels of poisoning with symptoms such as agitated behavior, twitching, frequent urination and increased heart rate. In some of these cases, the resulting heart problems can be fatal.

The problem substance in chocolate is theobromine, which is lowest in milk chocolate, higher in semi-sweet varieties and highest in bitter or burning chocolates. White chocolate has only traces of theobromine and is therefore not considered a potential poison.

Although white and milk chocolates are the least problematic in that they cause theobromine toxicity, they contain the highest amounts of fat and can cause pancreatitis or enteritis if consumed in large quantities or frequently. These conditions are life-threatening if left untreated.

Cats, like dogs, are also unable to process theobromine properly and may experience seizures, coma and death after consuming chocolate.

Chocolate is not only toxic to dogs and cats, but also to ferrets.



Because coffee contains the stimulant caffeine, animals that ingest it may experience an overexcited nervous system.

The lethal amount of caffeine for both dogs and cats is 150 mg / kg body weight.

Dogs may react after drinking coffee with increased breathing and heart rate, trembling and muscle twitching. Caffeinated cats often experience diarrhea and vomiting, a fast heartbeat, and shake uncontrollably, seizing, and shrinking.

A symptomatic animal should be induced to vomit and receive activated charcoal.

Hickory nuts

Hickory nuts irritate the stomach and can eventually lead to intestinal obstruction in dogs. When moldy, the resulting toxins can cause serious neurological problems such as seizures.

These nuts contain the organic substance juglon, which can lead to laminitis (inflammation of the hooves) if eaten by a horse. This substance has no effect on dogs.

Macadamia nuts

Containing more monounsaturated fats than any other seed, macadamia nuts are difficult for dogs and cats to digest and can lead to gastrointestinal problems and eventually lead to pancreatitis.

A certain as yet unidentified component in the macadamia nut also causes additional complications in dogs.

As early as 3 to 6 hours after ingestion of macadamia nuts, this substance leads to drowsiness and fever, which accompanies an upset stomach. Neurological symptoms usually appear within 12 hours, and dogs will show difficulty moving their hind limbs or standing. Most pets recover completely on their own within 24 hours of exposure, but for dogs that have recently consumed large amounts of nuts, especially nuts dipped in chocolate, causing vomiting to limit side effects.

Cats are also poisoned by this unidentified component in macadamia nuts and have complications of the digestive, muscular and nervous systems during their feeding.


Mustard seed

Mustard plant and seeds are toxic to chickens, cows, sheep and horses.

After consuming mustard plant parts, sensitive animals may develop oral irritation, sensitivity to light, difficulty breathing and gastrointestinal disorders. The problems become more severe depending on the amount taken. There is no antidote, so animals showing symptoms should be treated medically.

American walnuts

Dogs that receive pecans as a snack can cause gastrointestinal upsets or obstruction. When moldy, pecans cause a variety of neurological symptoms.

It is a nut containing juglone toxin and is therefore associated with laminitis in horses.


High in fat, these nuts can cause stomach upset and eventually lead to pancreatitis in dogs and cats.


Black walnuts and walnuts can lead to gastrointestinal problems or possible intestinal obstruction in dogs; moldy black, English or Japanese walnuts have strong mycotoxins that cause seizures or other neurological abnormalities.

In horses, black walnuts can cause vascular laminitis. This is due to the toxin they contain, known as juglone, which is not problematic for dogs.


Poisonous meat and animal products


Although not poisonous, a snack of bones is not without potential dangers.

Bones can stick to the mouth, throat or intestines and can split and create internal damage or blockages in dogs and cats.


A high-fat diet is difficult to process for cats or dogs and can lead to both obesity and pancreatitis.


Large amounts of liver in a dog’s or cat’s diet can create toxic levels of vitamin A. This has a negative effect on bones and can cause deformities, growths or osteoporosis in cats.

In dogs, symptoms of toxicity include calcified skeleton and diseased skin.

In some cases, levels of toxic vitamin A are fatal.

Meat lunch

High in fat and salt, a diet rich in lunch can lead to pancreatitis in dogs or cats (25). The high content of nitrates in meat delicacies is also unhealthy.

Milk and milk products

Some dogs and cats, usually older animals, are unable to process dairy products and develop diarrhea after eating them.


If they eat any type of fish in large enough quantities, dogs develop thiamine deficiency. Thiamine deficiency causes anorexia, seizures and death.

Believe it or not, eating large amounts of tuna in a cat can also have side effects. This is because it creates an imbalance of nutrients and can also lead to thiamine deficiency or mercury poisoning.


Raw eggs

Eating boiled eggs can lead to unhealthy skin and fur due to the enzyme avidin.

This enzyme inhibits the proper absorption of biotin in dogs and cats. In addition to problems with avidin, eggs can be contaminated with bacteria and lead to food poisoning.

Raw fish

Raw, unprocessed salmon can be infected with meccas, which carry rickettsial organisms.

These organisms are excreted in the dog’s intestines and cause fever within 24 hours, combined with a lack of energy and decreased appetite. Four days after consumption, vomiting occurs, followed by bloody, loose stools.

The mortality rate reaches ninety percent; Moisturizing treatments and antibiotics are needed for survival in most affected pets.

Raw fish, like canned tuna, if eaten in excessive amounts for a cat, causes thiamine deficiency. Cats are not susceptible to rickettsial infection through the consumption of salmon.

Unreached meat

Improperly cooked meat of all kinds can be contaminated with bacteria, which can lead to gastrointestinal disorders in dogs and cats.




Excessive consumption of nutmeg can create serious problems for dogs, leading to seizures, tremors or death.


Large amounts of salt dehydrate a domestic cat or dog and lead to an imbalance of sodium ions.

If an animal develops severe thirst, vomits, or becomes lethargic after significant salt intake, this may indicate kidney damage. An untreated pet can develop seizures or fall into a coma and die.

To avoid these complications, pets should be treated with IV fluids.


Large amounts of sugar lead to overweight pets (cats and dogs) with poor dental health and an increased risk of developing diabetes.


No xylitol candies

Sugar-free candies containing xylitol are considered dangerous to a pet’s health, according to the National Center for Animal Poison Control.

Not only in sweets, xylitol is found in sugar chewing vitamins, pastries and gums. One or two sticks of gum can kill a small dog; three or more sticks can kill a 65-pound pet.

Cats are similar in sensitivity to xylitol toxicity.

Xylitol causes insulin spikes and sinks into blood sugar, creating a lethargic dog or cat that is unable to maintain its balance. If left untreated, brain damage, liver failure or blood disorders develop and can lead to coma, seizures and death.

Yeast dough

The alcohol present in the yeast is absorbed into the bloodstream, leading to alcohol poisoning.

Signs that a cat or dog has been poisoned include shortness of breath, vomiting and fusion, followed by coma and eventually death. A pet can be saved from the full effects of this by being induced to vomit and ingest activated charcoal and IV fluids.

In addition to alcohol poisoning, the dough also causes problems when it expands and creates gases in the body’s warm, humid environment. This causes a rupture of the stomach or intestines in dogs or cats.



Alcohol (hops)

When a dog or cat drinks alcohol, it may become intoxicated. It only takes two teaspoons of whiskey for a 5-pound cat to fall into a coma, and three teaspoons leads to death.

Hops lead to shortness of breath, increased heart rate, fever, seizures and death in dogs. It is also dangerous for cats.


Marijuana slows down the nervous system in dogs and cats, alters heart function and causes vomiting.


Nicotine in tobacco disrupts the proper functioning of the digestive and nervous systems. Increased heart rate, coma and death may be the result of nicotine poisoning in cats and dogs.