Can Hamsters Eat Mushrooms?

Can Hamsters Eat Mushrooms?

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What are mushrooms?

Mushrooms are fungi, and they come in a vast array of colors, shapes and sizes. They range from your typical button types to incredibly exotic varieties like lion's mane or king trumpet mushrooms. They're a great source of fiber, vitamins and minerals, depending on the type of mushroom you're eating.

You may be wondering if mushrooms are safe for your hamster to eat. After all, they're a type of fungus, and fungus can be harmful to hamsters. To answer that question, you will have to read on!

Can Hamsters Eat Mushrooms?

Well, the general consensus is that it’s not recommended to feed these animals mushrooms as they can be poisonous. Some types of mushrooms contain toxins that may cause your hamster gastrointestinal distress or worse, so it's best to avoid them altogether.

If you do want to give your hamsters treats such as mushrooms, it’s imperative that you only feed them safe and non-toxic varieties like oyster mushrooms or portobello mushrooms—and only as an occasional treat in tiny amounts once in a while. 


Are Mushrooms Safe for Dwarf Hamsters to Consume?

The short answer is yes, dwarf hamsters can eat mushrooms, but before you give any to your tiny fluff ball, it’s important to understand why they should consume mushrooms in moderation.

Mushrooms are high in phosphorus, which can cause calcium deficiency if eaten regularly. So, while you can feed your pet hamster a few mushrooms as an occasional treat, make sure they don’t make up the bulk of their diet. Additionally, there are some types of mushrooms that are toxic to pets and should be avoided altogether.

When feeding dwarf hamsters mushrooms, look for white button or portobello mushrooms from the grocery store and make sure they are thoroughly cooked (not raw). You should also remove any moldy or slimy bits before feeding them to your pet as this could make them sick.

What Makes Mushrooms Dangerous for Hamsters?

Mushrooms can be dangerous for hamsters because they contain spores. Spores are tiny, single celled organisms that can cause illnesses if they are ingested. 

The toxins in the spores can affect the respiratory, gastrointestinal and neurological systems of a hamster. One example is called “spongiform encephalopathy” which has been linked to mushroom spores in humans and other animals, like hamsters.

What’s more, mushrooms also contain a substance called “triterpene glycosides”, which can cause your hamster to vomit or suffer from diarrhea. 

Some Benefits of Feeding Mushrooms to Hamsters

Although mushrooms do not offer much nutrients to your hamster, they can still make a wonderful addition to your pet's diet as they offer some important benefits.

-For one, mushrooms are a good source of protein, which helps keep your hamster healthy and strong. 

-In addition, they're high in antioxidants, which can help protect your hamster from the damaging effects of free radicals.

-Finally, mushrooms are also a natural source of Vitamin D. This is important as Vitamin D is essential for healthy bones and teeth.

In general, it is best to feed mushrooms as an occasional treat rather than making them a regular part of their diet.

Different Types and Varieties of Mushrooms for Hamster Diets

There are a few different types and varieties of mushrooms that are safe for hamsters to eat, but it's important to only give them those that have been properly identified and are not poisonous.

Some of the most popular types of mushrooms that can be safely fed to hamsters include the following:

  • Button mushrooms
  • Crimini mushrooms
  • Shiitake mushrooms
  • Oyster mushrooms
  • Hedgehog mushroom
  • Lobster mushrooms

When looking for mushrooms to give your hamster, it's important to avoid any type that has a dark cap, as well as any with white gills. These can be poisonous, and should never be given to your pet.


How to Prepare and Feed Mushrooms to Hamsters

The key thing to remember is that you must only feed hamsters with cooked mushrooms because some types of mushrooms may contain toxins and cannot be eaten raw.

If you are opting for store-bought ones, make sure they are labeled as edible and suitable for consumption. 

To cook at home, wash all mushrooms before cutting them into small, bite-sized pieces. You could also add a bit of butter or olive oil to help keep your hamster’s fur looking shiny and healthy. Steam or boil the mushrooms until they are soft enough for your hamster to eat.

When the time comes to feed the mushrooms to your furry friend, do it in moderation because too many can cause digestive issues like stomach ache and diarrhea. Make sure they’re served cool or at room temperature before offering them up as a snack.

Common Health Concerns When Feeding Mushrooms to Hamsters

When it comes to feeding mushrooms to hamsters, there are some common health concerns you should be aware of.

  • For starters, certain types of mushrooms contain toxins that can be harmful to hamsters when ingested. Therefore, it is important to make sure the mushrooms you give your hamster are safe and not toxic.
  • In addition, wild mushrooms can contain parasites and other associated pathogens such as bacteria and fungi that may harm your hamster. Therefore, only feed your hamster store-bought mushrooms or those grown in a home garden with certified organic soil that has not come in contact with pesticides or herbicides.
  • Lastly, some people have noted that too much mushroom consumption may cause digestive issues in their hamsters. If this happens, reduce the amount of mushrooms you are feeding them and make sure they are consuming a balanced diet with a variety of other fresh vegetables such as carrots, cucumbers and celery.


While there's some debate on the subject, most experts agree that the answer is no, hamsters should not eat mushrooms. While there are a few benefits to mushrooms, such as their high fiber and water content, the risks outweigh the benefits.

Mushrooms contain compounds that can be toxic to hamsters, and they are also a common allergen. If your hamster does eat a mushroom, watch for signs of illness, such as vomiting, diarrhea, and lethargy. If your hamster shows any of these signs, take them to the vet immediately.

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