The code of your pet

This website is reader-supported. When you buy through links on our site, we may earn an affiliate commission.

What You Should Never Feed Your Guinea Pig

Last Updated: 26.02.20


Before having a better understanding of what your guinea pigs need to eat, you should make sure that you get some bedding for guinea pigs so they can sit comfortably in their cage. Also, if you want them to have some fun, read this article to find more about what toys they need.

Guinea pigs eat a lot, and some of them seem to be made to eat, devouring everything. That is why it’s up to you to keep your guinea pig in a strict regime and only feed it what’s necessary. The following are some things that you should definitely avoid when feeding your pet.


Certain vegetables

These little rodents need vegetables and fruits in their daily diet, but not all of them are good for a guinea pig’s health. Certain vegetables pose the risk of stopping the pig’s digestive tract. There are vegetables and fruits that can be eaten by the animal, but only seldom, in small quantities.

Amongst these, you can find grapes, pips, oats, barley, and parsley. Also, anything derived from these has the same effect, like bread for example. They aren’t harmful to the guinea pig, but regular consumption may lead to problems.

Pay attention to potatoes and rhubarbs too, as they can be toxic for the little animal and they are also hard to break down and be digested. It’s best to avoid them altogether. The same should be done with iceberg lettuce, as it contains small amounts of toxins that cause a bad stomach for the little guinea pig.

You should also keep the pet away from any vegetable that comes from the cabbage family. These aren’t as bad, but they will cause bloating and the animal will feel sick if it is fed too much of them. Instead, you can give your pet lettuce, cucumbers or carrots. If you decide to give the guinea pig bell peppers or anything similar, make sure to always remove the seeds.



Avoid commercial treats

Guinea pigs are herbivores and that is why they will be pleased with having hay at their disposal along with some supplements that they can get from vegetables and fruits. That is why they don’t need special treats. Large stores try to influence the buyer by putting the treats in a cute package, but the reality is that those treats offer little to the guinea pig.

The treats are not only unnecessary but also inadvisable. The recipe used in them is most often unhealthy and full of sugar. If the treat also contains yogurt drops, it means that the little animal will get too many calories.

There are treats and snacks that resemble trail mix and contain many nuts and raisins. These should also be avoided, as their ingredients aren’t something that guinea pigs like or need. They also have high sugar content. Dehydrated fruits are to be avoided too, because of the high sugar content that is concentrated in them.



Any kind of seeds or millets are inadvisable for guinea pigs, and that is because they can get stuck between the teeth. Also, there is the risk of choking when eating seeds. It should be noted that guinea pigs are grazers and not seed eaters.

You can, unfortunately, find different foods on the market that contain seeds. Some treats also have them, and on top of that, they also contain other unhealthy ingredients. The only type of acceptable seeds are the seed heads that accidentally get in the hay or grass. These are good because they’re soft and can be digested easier.

Grains and bird seeds shouldn’t be fed to guinea pigs either. In the case of bird seed, a mix contains sunflower seeds, grains, wheat, oats, and millets. Additionally, low-quality seed mixes come with dried corn or junk that wouldn’t be good for birds either. So feeding them to pigs isn’t a good idea.



Although it may seem like something delicious that guinea pigs would like, cheese and other dairy products are not part of this animal’s diet. Because they are grazing animals, guinea pigs need to munch on grass and herbs all day long, and they are not evolved to chew on cheese. Their digestive system also can’t process dairy.

But what about vegan, non-dairy cheese? The answer is the same – they aren’t good for your pet. Although these products don’t contain actual milk or anything processed from it, they are made using certain ingredients and processed products that shouldn’t be eaten by the guinea pigs. These animals should eat fresh stuff, and not processed food that’s good for humans.

It’s important to offer your guinea pig a diet that is as close as possible to what it would eat in the wild, and cheese would certainly not fit on that list.




Despite what they may seem like, mushrooms are not vegetables or plants, but rather fungi. And that is why they aren’t good for a guinea pig’s health. Even the mushrooms that are sold in supermarkets for humans aren’t safe for guinea pigs. A lot of wild mushrooms are poisonous for the rodent, and some of them are poisonous for humans too.

If you like to have your guinea pigs run around your yard, be careful as they might not be as safe as you think. Even when they have their own small running space, guinea pigs can come across small mushrooms that have grown after a rain. So make sure to always check where you’re placing your pet if it’s on the grass.

Although some mushrooms aren’t toxic to guinea pigs, they don’t contain the nutrients needed, so there’s no reason to put these fungi in their diet.



Being one of those types of food that have some benefits, garlic is still disputed in the world of guinea pig experts, and it’s unsure yet if it’s good or bad for the animal. Although it may be really good for humans to eat it, garlic isn’t suitable for all kinds of animals.

Because it belongs to the onion family, garlic should be kept away from guinea pigs. The same applies to leeks and chives. Although the effects of garlic aren’t fully known, it’s better to avoid it. Some vets even go as far as saying that it’s one thing that should never be fed to a guinea pig because it can cause illness.



1 Star2 Stars3 Stars4 Stars5 Stars (1 votes, average: 5.00 out of 5)
Irina Ionescu

As a long-term learner and animal lover, Irina helps her readers find the best products and accessories for their pets, as well as the latest training techniques, tips & tricks on how to handle animals.

Leave a Reply

Notify of © 2019 SitemapPrivacy Policy Protection Status