Can Rats Eat Cheese?

pet rat in a rat home

Quick Answer:- Can Rats Eat Cheese?

Yes, rats can eat cheese, but it’s essential to note that it should not form a substantial part of their diet. While the stereotype of a rat loving cheese is widely accepted, it’s not entirely accurate from a nutritional perspective. Rats, much like humans, can have a diverse diet, but they require balanced nutrition for optimal health. Cheese, particularly in high quantities, can be too rich and fatty for rats, potentially leading to health problems such as obesity.

It’s advisable to provide your pet rat with a variety of fruits, vegetables, and high-quality rat pellets for a balanced diet. In this regard, tomatoes are a great choice and can be a healthier option compared to cheese. To learn more about how rats can safely consume tomatoes, please refer to our in-depth article can rats eat tomatoes?

Is Cheese Harmful To Rats?

Cheese itself isn’t inherently harmful to rats, but it’s not an ideal staple in their diet. The problem lies in cheese’s high fat and protein content, which can lead to weight gain and other health issues when consumed in large amounts. Rats have fast metabolisms, but they can still become obese if their diet is overly rich and lacks balance.

Moreover, not all cheese is created equal. Highly processed cheeses or those with added salts and preservatives can be more problematic for rats than natural, mild cheeses.

Lastly, some rats can be lactose intolerant, meaning they have difficulty digesting lactose, the sugar found in dairy products such as cheese. Ingesting cheese could lead to gastrointestinal discomfort or more serious issues in these individuals.

So, while cheese isn’t toxic or immediately harmful to rats, it’s certainly not the healthiest option and should be offered sparingly and as part of a balanced diet.

two pet rats cuddling

Are There Any Risks Of Feeding Cheese To Rats?

Feeding cheese to rats might seem like a treat, but it comes with a variety of potential risks. While rats have a versatile dietary palette, not all foods are equally beneficial or suitable for them. When it comes to cheese, the associated risks need to be carefully considered to ensure your pet rat’s wellbeing. Here are some of the key risks involved:

Obesity: Cheese is high in fat, and regular consumption can lead to weight gain and obesity in rats. Obesity in rats can lead to serious health complications, such as heart disease.

High Blood Pressure: The salt content in cheese can lead to high blood pressure, which is detrimental to a rat’s cardiovascular health.

Kidney Problems: High levels of protein and calcium found in cheese can cause kidney issues in rats, including kidney stones.

Lactose Intolerance: Some rats are lactose intolerant. Feeding them cheese can cause stomach upset, diarrhoea, and other digestive problems.

Allergies: Rats can be allergic to certain types of foods, including dairy products like cheese. Allergic reactions can range from mild discomfort to severe health issues.

Nutritional Imbalance: Overreliance on cheese can cause a nutritional imbalance, depriving your rat of the varied nutrients they need from a balanced diet.

Choking Hazard: If given in large chunks, cheese can pose a choking hazard, particularly for younger or smaller rats.

Toxic Additives: Some cheeses contain harmful additives or moulds that could be toxic to rats.

Poor Dental Health: The sticky consistency of cheese can lead to dental problems in rats, such as tooth decay.

Behavioural Issues: Feeding your rat cheese regularly can lead to picky eating habits, making it more challenging to provide them with a balanced diet.

In conclusion, while the occasional small piece of cheese won’t necessarily harm your rat, frequent cheese feedings carry various risks. These range from health issues like obesity and kidney problems, to behavioural issues like developing picky eating habits. As responsible pet owners, it’s essential to prioritise your rat’s overall health and nutritional balance over the temporary pleasure of a cheese treat.

Is Cheese A Good Source Of Nutrition For Rats?

Cheese, being a dairy product, does contain certain nutrients that could be beneficial for rats. However, the nutrient content can vary depending on the type of cheese, with natural, unprocessed varieties generally being more nutritious. Here’s a brief look at the nutritional content of cheese and how these nutrients could benefit rats:

NutrientNutritional Benefit for Rats
ProteinEssential for growth, repair of tissues, and maintaining a healthy immune system. However, too much protein can put strain on a rat’s kidneys.
FatProvides energy and helps support cell growth. Also aids in the absorption of certain vitamins. Yet, excessive fat can lead to obesity.
CalciumImportant for bone health, muscle function, and nerve signalling. Still, excessive calcium can lead to kidney stones in rats.
Vitamin AGood for vision, growth, and immune system function. Overdoses can lead to Vitamin A toxicity, which is harmful.
Vitamin B12Important for nerve function and the creation of red blood cells. Most rats get enough from a balanced diet without the need for cheese.
PhosphorusAlong with calcium, phosphorus helps maintain bone and teeth health. But, too much can harm a rat’s kidneys.
SodiumNecessary for normal body function including nerve and muscle function, but too much can cause high blood pressure.

While cheese does offer some nutritional benefits, the associated risks make it less than ideal as a frequent food source for rats. A small amount of mild cheese can be given as an occasional treat, but it should not replace a balanced, varied diet designed for rats.

Types of Cheese For Rats

If you decide to give your rat a small cheese treat, it’s crucial to choose the right type of cheese. While many varieties are available in the UK, not all are suitable for rats. Here are some that can be offered in moderation:

Mild Cheddar: This cheese is relatively low in salt and can be a suitable choice for rats. Remember to provide it in moderation due to its high fat content.

Cottage Cheese: Being lower in fat and salt compared to many other types, cottage cheese can be a healthier option. Its soft texture also reduces the risk of choking.

Mozzarella: Often used in cooking, this cheese is also suitable for rats. Again, be mindful of the portion size due to its fat content.

Cream Cheese: Although it’s soft and easy for rats to eat, cream cheese is high in fat. Therefore, it should only be given sparingly as a rare treat.

Edam: This cheese has a lower fat and salt content compared to many other varieties, making it a safer choice. But, as with all cheeses, it should be given in moderation.

Avoid feeding your rat any type of blue cheese, such as Stilton or Roquefort. These cheeses contain mould cultures that can be harmful to rats. Also, highly processed cheeses, often found pre-sliced or in sticks, are not suitable due to their high salt and preservative content.

Remember, while these cheeses are generally safer for rats, they should still only be used as occasional treats and not as a staple in their diet. Balance is key to maintaining a rat’s good health.

a rat sitting on a piece of wood

Do Rats Like Cheese?

While the popular depiction of rats in media often involves a love for cheese, the reality is somewhat different. Rats are omnivores with a wide-ranging diet, and they are likely to eat cheese if it’s available to them. This is more due to their opportunistic and non-fussy eating habits rather than a particular fondness for cheese.

In fact, studies have shown that rats often prefer foods with high sugar content, such as fruits, over cheese. Moreover, each rat can have unique food preferences, much like humans, so not all rats will respond to cheese in the same way.

To summarise, while some rats may appear to like cheese, it’s not an universally preferred food among rats. Their opportunistic eating habits and wide-ranging diet preferences play a significant role in their willingness to eat cheese when available.

How Should You Serve Them Cheese?

If you do decide to give your rat cheese as an occasional treat, there are a few considerations to ensure it’s served in a safe and enjoyable way:

Portion Size: Only offer a small amount of cheese. A piece the size of a pea is more than enough for a rat. This helps control their intake of fat, salt, and protein.

Frequency: Cheese should not be a regular part of a rat’s diet. Giving it once a week or less is a good rule of thumb.

Presentation: Cut or grate the cheese into small, manageable pieces to prevent choking.

Type of Cheese: Stick to the types of cheese mentioned earlier, like mild Cheddar or cottage cheese. Avoid any type of blue cheese or highly processed cheeses.

Monitor Your Rat: After feeding cheese to your rat for the first time, keep an eye on them. If they show any signs of discomfort, diarrhoea, or other health problems, discontinue feeding them cheese and consult a vet.

Remember, the key to feeding cheese to your rat is moderation. While it can serve as an occasional treat, it should never replace a balanced, rat-friendly diet.

How Much Cheese Can Rats Eat?

When it comes to feeding cheese to rats, less is more. Given the high-fat content and other potential health risks associated with cheese, it’s best to limit this food to a very occasional treat.

A small piece of cheese the size of a pea is more than enough for a rat. This portion helps limit their intake of fats and salt, which in larger quantities can lead to health problems such as obesity and high blood pressure.

Frequency is also a crucial factor. Cheese should not be a regular part of a rat’s diet due to its high-fat content and other health risks. Giving cheese to your rat once a week or less would be a sensible guideline.

Overall, the primary focus of your rat’s diet should be a high-quality rat pellet, supplemented by a variety of fruits, vegetables, and small amounts of protein. These foods offer a balance of nutrients that are essential for your rat’s health and well-being. Cheese should only ever be an occasional addition, and not a dietary staple.

What Should Their Main Diet Consist Of?

Rats thrive on a balanced and varied diet that provides all the necessary nutrients for their health and well-being. Their main diet should include the following:

High-Quality Rat Pellets: Commercial rat pellets or blocks are formulated to provide a balanced diet and should form the primary basis of your rat’s food intake.

Fruits and Vegetables: Fresh fruits and vegetables supplement the diet with vitamins and fibre. Apples, bananas, broccoli, and peas are all good choices. However, not all fruits and vegetables are safe for rats, so always check before introducing a new food.

Whole Grains: Foods such as brown rice, quinoa, and barley are excellent sources of complex carbohydrates and provide necessary energy for your rat.

Lean Proteins: Small amounts of lean meats, such as chicken or turkey, can provide essential proteins. Alternatively, cooked pulses like lentils or chickpeas are good plant-based protein sources.

Water: Fresh and clean water should be available at all times.

Foods to avoid include raw red cabbage, raw Brussels sprouts, green bananas, and sweetcorn, which can be hard for rats to digest. Also, sugary, salty, or fatty foods, including most human junk food, should be strictly avoided.

Remember, while it can be tempting to offer your rat treats like cheese, the key to their health is a balanced and varied diet that covers all their nutritional needs.

rat outside sat on green grass

Where Can You Buy Rats Food?

There are many excellent online retailers where you can purchase rat food, ensuring your pets get the balanced and varied diet they need. Here are a few UK-based options:

Pets at Home offers a wide range of rat food, including commercial pellets and mixes, along with treats and dietary supplements.

At VetUK, you’ll find a selection of rat foods specially formulated to meet your pet’s nutritional needs.

RatRations is a dedicated store for rat food and supplies. They offer a comprehensive range of dietary options, including seeds, grains, and supplements.

Pet Planet is another online pet store where you can find a variety of foods suitable for rats, from pellets and mixes to special diet foods.

Remember to research the nutritional content and suitability of the food you choose to ensure it meets the dietary needs of your rat.

What Food Should You Avoid Giving Rats?

Just as certain foods can contribute positively to your rat’s diet, there are others that can be harmful and should be avoided. Here’s a brief overview of such food items and the reasons they aren’t suitable for your rat:

Food or DrinkReason for Avoidance
Raw Red Cabbage and Brussels SproutsThese can interfere with a rat’s ability to absorb calcium, leading to bone health issues.
Green BananasThey inhibit starch digestion, which can lead to digestive discomfort.
SweetcornCan be hard for rats to digest and may lead to digestive issues.
Blue CheeseThe mould in these cheeses can be harmful to rats.
Raw Sweet PotatoesThey contain compounds that can be toxic to rats when consumed in raw form.
RhubarbThe high levels of oxalic acid in rhubarb can be harmful to rats.
Highly Salted FoodsExcessive salt can lead to a range of health issues, including high blood pressure and kidney disease.
Sugary FoodsThese can lead to obesity, dental problems, and diabetes in rats.
Alcohol and Caffeinated BeveragesThese can cause serious harm to your rat’s health, including cardiac issues and neurological problems.
ChocolateAlthough a small amount of dark chocolate may help with respiratory issues, generally, chocolate can be harmful due to its caffeine and theobromine content.

After introducing any new food to your rat’s diet, it’s important to observe them for any signs of discomfort or illness. If you notice any adverse effects or have concerns about your rat’s diet, consult with a vet or a pet nutrition expert. Always remember that a balanced diet of rat-safe foods will provide the best health benefits for your pet rat.


In conclusion, while it’s technically safe for rats to consume cheese, it’s not the ideal food for them due to its high fat and salt content, and it certainly doesn’t align with the image of cheese-loving rats often depicted in popular media. Cheese can be given as an occasional treat in small quantities, but it shouldn’t form a significant part of a rat’s diet.

It’s crucial to provide rats with a balanced and varied diet that includes high-quality rat pellets, fresh fruits and vegetables, whole grains, and lean proteins. Always remember that the primary focus of your rat’s diet should be foods that offer a balance of nutrients essential for their health and well-being.

Avoid potentially harmful foods and always monitor your rat for any changes in behaviour or health after introducing new foods. With the right diet, your rat can lead a healthy, active, and fulfilling life. Remember, when in doubt, it’s best to consult with a vet or pet nutrition specialist.

From cheese to suitable rat food, making informed decisions about your rat’s diet is a vital part of responsible pet ownership.

white rat on brown cardboard box


Can Rats Eat Blue Cheese?

No, rats should not eat blue cheese. The mould cultures in blue cheese, which give it its characteristic veins and flavour, can be harmful to rats. It’s best to avoid feeding your rat any kind of mould-ripened cheese.

Can Rats Eat Gorgonzola?

Just like blue cheese, Gorgonzola is a type of mould-ripened cheese, and it’s not safe for rats to consume. The mould in Gorgonzola can be harmful to rats, and it should be avoided in their diet.

Can Rats Eat Brie?

While Brie is not specifically harmful to rats, it is a very rich and creamy cheese with a high fat content. Given that high-fat foods should be limited in a rat’s diet, it would be best to avoid feeding Brie to your rat or only give it as a very occasional treat in very small amounts.

Can Rats Eat Cheddar Cheese?

Rats can eat cheddar cheese, but it should be given in moderation due to its high fat and salt content. A mild cheddar is a better choice as it usually contains less salt than more mature varieties.

Can Rats Eat Parmesan?

Parmesan cheese is high in salt and fat, and therefore it should not be a regular part of a rat’s diet. If you choose to feed Parmesan to your rat, it should be a very occasional treat and in very small quantities.

Can Baby Rats Eat Cheese?

It’s best to avoid giving cheese to baby rats. Their digestive systems are still developing, and they require a balanced diet of specially formulated rat milk replacement and, later, rat pellets to grow properly. Once they are adults, small amounts of cheese can be introduced as an occasional treat.

Can Rats Eat Mozzarella Cheese?

Yes, rats can eat mozzarella cheese, but it should be given sparingly due to its high fat and salt content. Mozzarella is often lower in salt than many other types of cheese, but it’s still best to keep it as a very occasional treat.

Can Rats Eat Cottage Cheese?

Cottage cheese can be a healthier option for rats compared to other types of cheese due to its lower fat and salt content. However, it should still be given in moderation, and it’s crucial to choose a variety without added sugar or flavourings.


Blue Cross for Pets. (n.d.). Caring for your rat | Blue Cross. [online] Available at: [Accessed 25 July 2023].

Pets at Home. (n.d.). Rat Advice | Small Pet Advice | Pets at Home. [online] Available at: [Accessed 25 July 2023].

RSPCA NSW. (n.d.). How to care for your rat | RSPCA NSW. [online] Available at: [Accessed 25 July 2023].

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