Can guinea pigs eat onions? (Serving Size, Risks and More) (2023)

Can guinea pigs eat onions?

Onions are a healthy option for most people.

However, they are poisonous to most mammals.

Let's Find Out If Guinea Pigs Can Eat Onions Like These Critterseat almost anythingread that

table of Contents

  • Can guinea pigs eat onions?

    No, guinea pigs can't eat onions and stay healthy.

    In fact, onions can kill a guinea pig.

    If you feed guinea pigs onions, there is a high chance that your guinea pig will suffer greatly and die.

    First, onions do not have many nutritional benefits for your guinea pig.

    Also, if a guinea pig eats an onion, this little animal will likely experience eye and nose discharge and increased salivation.

    Second, onions contain disulfide, a substance that can cause extreme anemia in guinea pigs, which is very dangerous.

    Finally, even a small amount of onions can poison your guinea pig.

    Onion poisoning in guinea pigs can be fatal, so contact a vet immediately.

    Therefore, if guinea pigs eat onions, they can die.

    So, guinea pigs cannot eat onions, they are poisonous for these small animals.

    Before we go any further, here are the healthiest guinea pig foods on the market:


    Can guinea pigs eat onions? (Serving Size, Risks and More) (1)

    Kaytee All Natural Timothy Hay for Guinea Pigs, Rabbits and Other Small Animals, 12 Pounds

    • Naturally grown without pesticides and bred specifically for small animals.
    • Specially grown for small animals.
    • High in fiber to support digestive health
    • America's #1 Hay Brand
    • All-natural, non-GMO ingredient

    Can guinea pigs eat onions? (Serving Size, Risks and More) (2)

    (Video) 15 Ways You Are Hurting Your Guinea Pig Without Realizing

    Oxbow Essentials Adult Guinea Pig Food, All Natural Granules for Adult Guinea Pigs, 5 lbs.

    • ESSENTIAL INGREDIENTS FOR A HEALTHY AND ACTIVE LIFESTYLE: Made from high fiber Oxbow Timothy Hay to support a...
    • SUPPORTS IMMUNE SYSTEM HEALTH: Made with stabilized Vitamin C and antioxidants to support immune system health...
    • PERFECT FOR Picky Eaters - Uniform pellets prevent selective feeding
    • FORTIFIED FOODS: Fortified with vitamins and minerals for optimal health
    • VET RECOMMENDED - Formulated with guidance from top veterinarians and nutritionists.

    Last updated on 01/22/2023 / Affiliate Links / Amazon Product Advertising API Images

    onion facts

    Humans have been eating onions for at least 7,000 years.

    The oldest evidence dates back to 5000 BC.

    Rich in antioxidants, onions are known for the strong flavor and aroma they impart to processed foods.

    Onions are rich in antioxidants and vitamin C, so this would be the only benefit of onions for guinea pigs.

    However, you want to find a lotbest substitute for vitamin cfor your guinea pig.

    Aside from poisoning and extreme reactions in guinea pigs, another reason why guinea pigs cannot eat this vegetable is its high sugar content.

    The high sugar content in the food can also cause digestive problems in guinea pigs.

    Any guinea pig reacts badly to increased sugar levels because its body cannot digest it.

    Also, the main food source for guinea pigs is fiber, which is found in timothy hay and other types of grasses and guinea pig pellets.

    Onions belong to the chive family and are commonly grown around the world.

    Leeks, garlic, chives and more are also part of this family.

    While we humans eat onions raw, we also bake, roast, fry and grill them.

    Onions are usually diced and used as an ingredient in many recipes.

    Onions are known for their chemical properties that can irritate the skin.

    They are also rich in phytochemical compounds that can have many benefits for people's health.

    As you can see, although onions make us cry because of the sulfuric acid they contain, which produces thick smoke, onions are wonderful for human well-being.

    Fast facts

    • Humans have been eating onions for over 7,000 years.
    • The ancient Egyptians enjoyed onions. They claimed that the shape of the onion signified eternity and the many layers within. They used to place them in the tombs of the pharaohs for a prosperous life in the afterlife.
    • Onions were a bargaining chip in the Middle Ages and were given away
    • Onions make us cry because they contain sulfuric acid (which also irritates a guinea pig's eyes!)
    • The world's tallest cultivated onion has been discovered in Britain and holds a record at a whopping 18lbs.
    • Onions are a natural remedy for skin conditions, including insect bites or burns.

    What are the nutrients in onions?

    Eating onions is great for humans, but not for guinea pigs.

    Let's see what onions are made of and whether your guinea pigs could benefit from eating onions if these vegetables do not contain ingredients that are toxic to guinea pigs.

    Onions contain:

    • Carbohydrates = 9.34g
    • Fett = 0,1 g
    • Sugar = 4.24g
    • Fiber = 1.7 g
    • Protein = 1.1g
    • water = 89.11g
    • vitamins=
      • Tiamina = 0,046 mg
      • Riboflavin = 0,027 mg
      • Niacin = 0.116 mg
      • Pantothenic acid = 0.123 mg
      • Vitamin B6 = 0.12 mg
      • Folate = 19 ug
      • Vitamin C = 7.4 mg
    • minerals=
      • Calcium = 23mg
      • Hierro = 0,21 mg
      • Magnesio = 10 mg
      • Manganese = 0,129 mg
      • phosphorus = 29 mg
      • Potassium = 146 mg
      • zinc = 0,17 mg
      • Fluoride = 1,1 ug

    make onionshave certain useful substanceslike vitamin C and vitamin B complex, but your guinea pigs can get all of these from their daily cup of fresh fruits and vegetables.

    Feeding your guinea pig fresh, leafy greens and other tasty, safe vegetables will ensure that they are not deprived of the nutrition they need.

    Should you feed your guinea pig onions?

    No, you should never feed your guinea pig onions.

    (Video) Healthy Alternatives to Unsafe Guinea Pig Treats | GuineaDad

    The smell and taste of onions are not only too strong for your guinea pig's sensitive stomach, but the vegetable is also toxic to your pet.

    While onion poisoning in guinea pigs is unlikely, there are many other reasons why you shouldn't consider giving your guinea pig onions.

    We'll see.

    Why are onions poisonous to guinea pigs?

    Feeding your guinea pig onions can damage not only the urinary tract but also the guinea pig's organs.

    Therefore, never give guinea pigs onions.

    Onions are also rich in calcium.

    You should not feed your pets foods rich in calcium as it leads to urinary and kidney stones which can be very uncomfortable when urinating, can cause urinary tract infections and blood in the urine.

    Another reason why you shouldn't consider feeding your guinea pigs onions is the high sugar content in these vegetables, which causes diabetes, digestive problems, and loose stools.

    Also, disulfide can cause problems in the guinea pig's respiratory system.

    Onions are so dangerous to guinea pigs that they kill your guinea pig's red blood cells, which are their main oxygen carriers.

    If guinea pigs eat onions, they will suffer a lot: they will lose their appetite, lose weight, become anemic and tired, and these are just some of the symptoms that your guinea pigs would display.

    So do not do itFeeding Guinea Pigs OnionsNot at all, since onions are poisonous to guinea pigs.

    More about the negative effects of onions on the health of your guinea pig

    The first thing you'll notice when a guinea pig eats an onion isdischarge from your guinea pig's eyes and nose.

    They may also have increased salivation.

    Guinea pigs don't usually vomit; The first caveat would be this instead.

    From here, the guinea pig's health will deteriorate rapidly.

    Seek urgent medical attention if you think the guinea pig has eaten even small amounts of onions.


    One serving of onion contains much more calcium than guinea pigs need.

    As a result, eating onions in guinea pigs leads to urinary problems, kidney stones, and the like.

    digestive problems

    Guinea pigs have a rather delicate digestive system.

    To stay healthy, guinea pigs need to eat a balanced diet that is good for their digestive systems.

    Sugar is something you shouldn't eat, and the sugar content in onions is quite high.

    Since their bodies aren't made for it, guinea pigs will quickly be harmed by this excessive sugar intake.


    Of all the effects of onions on guinea pigs, this is probably the most damaging.

    The disulfides in onions damage red blood cells, leading to shortness of breath and eventually anemia, both of which are quite serious.


    If left untreated or left too long, onion poisoning in guinea pigs can prove fatal.

    Take your guinea pig to the vet so he can get the attention he needs right away.

    Even small amounts of onion are poisonous to guinea pigs.

    (Video) Can GUINEA PIGS Eat BANANA & BANANA PEEL or Banana Chips? | Do They LIKE Banana?

    Ingesting as little as 2.5 g/lb is life-threatening.

    Many guinea pigs weigh between 1.5 and 2.5 pounds, which means that as little as 7.5 grams of onions is lethal to them.

    The compounds in onions are toxic to guinea pigs because they destroy red blood cells.

    This can cause everything from kidney dysfunction to reduced oxygen transfer throughout the body.

    Poor calcium-phosphorus ratio

    You may also know at this stage that calcium can be dangerous.

    The same applies to the consumption of phosphorus.

    It's not good in abundance either, but what matters most is the proportion.

    37 mg of calcium and 47 mg of phosphorus are present in onions, which is poor.

    Consuming more calcium than phosphorus goes against a basic premise of a guinea pig's diet.

    Note that this poses little risk compared to the onion toxicity described above.

    Are Boiled Onions Safe for Guinea Pigs?

    onionsit cannot be cleaned and made healthy for guinea pigs.

    Cooking onions does not make them any safer for guinea pigs.

    Processing onions does not remove toxins.

    Also, guinea pigs cannot eat processed foods at all.

    Likewise, frozen onions would not make your pet any safer.

    Only certain types of fresh fruits and vegetables are good for your guinea pig's healthy diet.

    Vitamin C and other important ingredients can come from these other, more stable food sources for your pet.

    What alternatives are there to onions?

    Now that you know the answer to the question, can guinea pigs eat onions? (no, they can't), another question arises: what can guinea pigs eat?

    Here is a list of healthy and safe foods for your guinea pig to eat.

    Unlike Onions, These Ingredients Are Realintestinefor guinea pigs.

    • beet root
    • Leafy green vegetables (such as kale, spinach, and broccoli)
    • Lettuce - in small doses
    • asparagus
    • cucumbers
    • green paprika
    • pumpkin

    Chewing on any of these foods will help make guinea pigs comfortable and keep your pet healthy and happy.

    What kind of onions can guinea pigs eat?

    As you have learned, guinea pigs cannot eat onions.

    Onions don't just cause digestive problems in your guinea pigs, onions are also toxic and deadly to your pet.

    Therefore, the nutritional benefits that onions would provide to your pet are not worth the risk of feeding this vegetable to your pet when there are many other nutritious foods that your guinea pig can eat.

    Can Guinea Pigs Eat Red Onions?

    No, guinea pigs cannot eat red onions, as they are just as toxic as any other type of onion.

    Onions literally destroy a guinea pig's red blood cells, causing anemia and damaging its organs.

    Onions are so harmful that even a slice can cause great harm to guinea pigs.

    Can guinea pigs eat shallots?

    No, guinea pigs can't eat shallots like we can.

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    Shallots also contain disulfides and thiosulfates, which are harmful to guinea pigs' health and also kill their red blood cells, even if given in small amounts.

    Can guinea pigs eat chives?

    No, guinea pigs cannot eat green onions, also known as scallions.

    Like other onions, they are lethal to guinea pigs.

    But the top coats are not toxic at all, so if you feel you must feed your guinea pig top coats, you are welcome to do so.

    However, wash these top layers well before giving them to guinea pigs, as they may contain chemicals and pesticides.

    But here's another reminder: Onions contain disulfides, which can cause extreme anemia in guinea pigs.

    So the question is, do you want to risk poisoning your pet when there are other ways to provide him with all the nutrients his body needs?

    What are the benefits of onions for guinea pigs?

    Onions have no beneficial nutrients for guinea pigs other than vitamin C.

    However, this is not a good enough reason to feed your guinea pigs onions, as even the smallest amount of onions can kill them.

    Onions contain toxic disulfides, excess starch, excess calcium, etc.

    Eating onions causes very serious symptoms that are far worse than the normal urinary complications that most unbalanced and inappropriate guinea pig diets can cause.

    What to do if your guinea pig eats onions

    Do you think your guinea pig bit into an onion?

    If your guinea pig has eaten onions, call a vet immediately for specific instructions on what to do.

    Pay attention to the first signs: discharge from the eyes and nose, as well as increased salivation.

    Just a small amount of onion can seriously harm your guinea pig.

    Guinea pigs have stomach aches and general stomach problems due to the discharge and saliva.

    Eventually the guinea pig will become anemic which will be fatal for your guinea pig.

    How to get your guinea pig to stop eating onions?

    Before you let your guinea pig outside, remove all potted plants out of their reach.

    Make sure the pantry door is closed and there are no bags of onions on the floor.

    Never leave your guinea pig unattended in or out of the house.

    If you want to let your guinea pig out, just make sure the yard is roped off accordingly.

    Keep your guinea pig out of any area where it might find something that could cause harm.

    Here are the best guinea pig products right now:

    Last updated on 01/23/2023 / Affiliate Links / Amazon Product Advertising API Images

    final thoughts

    A healthy guinea pig's diet consists of fiber in timothy hay and fresh fruits and vegetables, which are rich in fiber and vitamin C.

    Similarly, you can feed your guinea pig guinea pig pellets, which are often fortified with vitamin C supplements.

    However, if you are feeding your pets fruits and vegetables, it is important to know which foods are beneficial for your guinea pigs.

    (Video) How to Feed the Best and Healthiest Guinea Pig Diet!

    Onions are definitely not something you want to give your guinea pig, as they are highly toxic to these little animals.

    If a guinea pig eats onions, it will suffer greatly, because even the smallest amount of onions is dangerous for this small animal.

    Onion poisoning is a serious condition that can be fatal for guinea pigs. So if you think your guinea pig has bitten into an onion, call a vet right away.


    What happens if a guinea pig eats onions? ›

    Onion is not highly poisonous as these things go, it should just not be part of any regular diet. Anything growing bulbs is a firm no no for guinea pigs; some can be worse than others. Onion would be too sharp in taste for them, anyway. I would not worry, just not repeat the experience.

    What is the most poisonous food for guinea pigs? ›

    Poisonous food and plants for guinea pigs
    • Pet shop treats such as yoghurt drops, chew bars etc are very fattening and can contribute to poor dental health.
    • Avocado.
    • Buttercup leaves and flowers can cause extreme discomfort and in some cases be fatal.
    • Foxglove.
    • Ragwort.
    • Ivy.
    • Privet.
    • Holly.

    Are guinea pigs aloud onions? ›

    Make sure you do not feed your guinea pigs the following foods (this is not an exhaustive list): cereals; grains; nuts; seeds; dried beans, corn, and peas; buttercups; garden shrubs (such as hemlock or privet); lilies of any kind; sweet peas; nightshade; oak; avocado; onion grass; onions; potato tops; mushrooms; ...

    Can guinea pigs eat tomatoes and onions? ›

    Tomatoes can be given to your piggy around two or three times per week at most! Guinea pigs can eat any kind of tomato—it's just important that they're completely ripe and fed in moderation.

    How much onion is toxic to pets? ›

    It only takes 100 grams of onion (about the size of a medium onion) per 20 kilograms of a dog's weight to cause toxic effects, which means that a 45-pound dog would only have to eat one medium-to-large onion to experience dangerous toxicity levels.

    What can I give my guinea pig if I ran out of food? ›

    Guinea pigs can live without pellet food for weeks if they have access to unlimited hay and receive adequate Vitamin C through their daily vegetables. Hay is more crucial for guinea pigs, but they can go without it for a few days to a week if necessary. However, guinea pigs can't go without hay and pellets both.

    What are the signs of poisoning in guinea pigs? ›

    Following poisoning, the guinea pigs were observed for toxic cholinergic signs such as chewing, tremor, salivation and convulsions. Clear chewing movements involving the entire head were scored as chewing, often accompanied by extensive drooling (salivation) later on.

    Are eggs poisonous to guinea pigs? ›

    At the most basic level, guinea pigs are herbivores. That means that they just eat fruits and veggies—no dairy, eggs, meat, or insects for these little guys. Fresh hay and fresh leafy vegetables should make up the bulk of your guinea pig's diet.

    Can guinea pigs have peanut butter? ›

    Aside from this, peanut butter also contains a lot of sodium, sugar and too many calories. Peanut butter also has a dangerous mechanical effect, it is a choking hazard for them! They have a small esophagus and can get stuck. Some of the symptoms of peanut butter toxicity are constipation and an upset stomach.

    What vegetables guinea pigs Cannot eat? ›

    Vegetables to avoid include: iceberg lettuce, potatoes, cabbage, and broccoli. Guinea pigs should eat a few types of vegetables regularly and new veggies should be introduced into the diet gradually to avoid diarrhea, bloat, and an upset tummy.

    What veggies can guinea pigs eat everyday? ›

    Fruit and vegetables: Fresh vegetables can be offered once a day and should be equivalent to about one cup total per guinea pig per day. Leafy greens like romaine lettuce, red and green leaf lettuces, kale, cilantro and parsley should comprise the bulk of your pig's fresh produce.

    Is cucumber OK for guinea pigs? ›

    Cucumber: Guinea Pigs can eat both the flesh, seeds (not too much) and the skin. Green beans:These contain vitamin C, and can be fed in a raw state.

    Can guinea pigs eat banana? ›

    Overall, bananas can be a great treat every once in a while for healthy guinea pigs. They are great health benefits like potassium and vitamin C, both are vital for your pig's health. Bananas can also be harmful to your guinea pig if they are not properly portioned due to their high levels of sugar and fiber.

    Can guinea pigs eat pickles? ›

    You should not give pickles to your Guinea pigs, because that will increase their solidium content. And this is not good for the Guinea pigs because they can only proceed with fresh grass and veggies. If you try to feed your Guinea pig with pickles, it can lead to digestive problems which can be fatal for the pet.

    Can guinea pigs eat corn? ›

    Overall, it is OK to feed your guinea pigs corn!

    However, just remember that it should be regarded as a once-in-a-while treat! The starch can be harmful to your guinea pig, and it's important that we keep them safe and healthy.

    How many grams is one onion? ›

    A medium onion would be smaller than this and around 150-170g (about 6 ounces) and a small onion around 125g (4 1/2 ounces) or below.

    How much is an oz of onion? ›

    Yields & Conversions
    Onion Size (inches)2-1/23-1/2
    Raw Onion Average Weight4.34 ounces11.09 ounces
    Raw Onion Weight Range3.71 to 5.33 ounces10.06 to 12.32 ounces
    Usable Peeled Onion per Raw Peeled Weight73.54%78.54%
    Peeled Onion Weight Range2.47 to 4.68 ounces7.7 to 10.11 ounces
    3 more rows

    Are onions toxic to all animals? ›

    All onions — whether cooked or raw or even free-dried — are a danger to your pet. It takes a small amount of onions to poison your cat or dog, with cats being more sensitive to onion's effect than dogs.

    Can guinea pigs survive 2 days without food? ›

    Guinea pigs should not go longer than 6-8 hours without food. Guinea pigs do not starve in that time, but their body can go into GI stasis. This is where the gastrointestinal tract slows down and stops digesting food and moving fluid throughout the body.

    What can guinea pigs eat unlimited? ›

    "The preferred basic diet for guinea pigs is unlimited amounts of Timothy or other low-calcium hay, supplemented with smaller amounts of a commercial, high-fiber, Timothy-hay based guinea pig pellets."

    Will guinea pigs drink water out of a dish? ›

    Whether you choose to offer water in bottles or bowls is up to you and your guinea pigs. Try both to see what your guinea pig herd prefers. One guinea pig might prefer a water bowl and another might only drink from a bottle.

    Can guinea pigs get sick from a dirty cage? ›

    Dirty cages can be a life-threatening health hazard

    The bottomline on how often to clean the cage is -- as often as needed. Guinea pigs should never be sitting in wet bedding or wet fleece.

    What is the most common cause of death in guinea pigs? ›

    Pneumonia is actually the leading cause of death in Guinea pigs. It is generally caused by a bacterial infection. Some of the symptoms of pneumonia include wheezing, trouble breathing, discharge from the nose or mouth, weight loss, reddish eyes, and depression.

    Do all guinea pigs carry salmonella? ›

    This outbreak is a reminder that pet rodents such as guinea pigs, regardless of where they are purchased or adopted, can carry Salmonella bacteria even when they look healthy and clean. Follow CDC's tips to keep you and your pet safe and healthy. Pick the right pet.

    What happens if a bird eats onion? ›

    Onions contain sulfur compounds that, when chewed, can irritate the lining of a bird's mouth, esophagus, or crop, causing ulcers, and can induce rupture of red blood cells resulting in anemia. Garlic contains allicin, another chemical that can cause anemia and weakness in birds.

    Are onions toxic to pigs? ›

    Onions are toxic to some animals, however, pigs are as omnivorous as we are and can actually eat onions. It just isn't nutritious to them. It can also lead to a rare anemia disorder if fed in quantity. The main reason onions are not fed to pigs is that it changes the taste of the meat.

    Can a guinea pig get food poisoning? ›

    Salmonellosis in Guinea Pigs. Salmonellosis is an uncommon bacterial infection in guinea pigs, usually the result of ingestion of the salmonella bacterium.

    What happens if a hamster eats onion? ›

    Onion: It may result in damage to the red blood cells. Peanuts: They are too high in fat for hamsters, and the salted variety may contribute to dehydration.

    What animals are onions toxic to? ›

    Cattle and cats are the most susceptible to onion poisoning, horses and dogs are intermediate, with sheep and goats being the most resistant. Dog breeds such as Akitas and Shibas are especially sensitive to onion poisoning.

    What animals can safely eat onions? ›

    Well, animals like squirrels, rabbits, raccoons, moles, birds, deers, snails, slugs, groundhogs, and rats can eat onions but others might fall ill.


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