Milk, Yogurt, Greek Yogurt, Cheese, and Lactose Intolerance

Some cats can tolerate a very small amount of certain dairy products, but many adult cats are lactose intolerant. Milk, yogurt, Greek yogurt, cheese, and other dairy foods are not necessary for feline nutrition and may cause diarrhea, gas, vomiting, or abdominal discomfort.

Plain Greek yogurt may contain less lactose than regular milk, but it can still upset a cat’s stomach. Flavored yogurt, sweetened dairy products, ice cream, and foods containing chocolate, coffee, raisins, alcohol, or artificial sweeteners should never be offered.

This guide explains whether cats can drink milk, whether yogurt and Greek yogurt are safe, how lactose intolerance affects cats, which dairy products are most likely to cause problems, and what to do if your cat reacts badly after eating dairy.

Can Cats Eat Dairy?

Some cats can tolerate a small amount of dairy, but many adult cats cannot digest lactose efficiently.

Dairy products may contain:

Protein
Fat
Calcium
Vitamin B12
Riboflavin
Potassium

However, these nutrients are already supplied in appropriate amounts by complete and balanced cat food. Dairy is not required for a cat’s health.

The main concerns with dairy include:

Lactose intolerance
Digestive upset
High fat content
Excess calories
Added sugar
Unsafe flavorings or sweeteners
Displacement of complete feline nutrition

For broader meal-planning guidance, read our complete cat feeding guide.

Why Do Cats Like Milk?

The familiar image of a cat drinking milk likely comes from farm settings, cartoons, books, and older feeding habits.

Cats may be attracted to milk because of its:

Fat content
Protein
Smell
Creamy texture

Enjoying the taste does not mean milk is easy for a cat to digest or appropriate as a regular drink.

What Is Lactose Intolerance in Cats?

Lactose is the natural sugar found in milk and many dairy products. The enzyme lactase is needed to digest it.

Kittens produce lactase so they can digest their mother’s milk. As kittens are weaned and mature, lactase production often decreases.

When lactose is not properly digested, it remains in the intestines, where it can draw in water and ferment. This may cause diarrhea, gas, bloating, and abdominal discomfort.

Some cats tolerate a small amount of dairy. Others develop symptoms after only a few licks.

Signs of Lactose Intolerance in Cats

Symptoms may appear within several hours after a cat eats or drinks dairy.

Loose stool
Diarrhea
Gas
Bloating
Vomiting
Abdominal discomfort
Gurgling stomach sounds
Reduced appetite
Restlessness

Stop offering dairy if your cat develops any of these signs.

Milk Allergy vs. Lactose Intolerance

Lactose intolerance is caused by difficulty digesting milk sugar. A milk or dairy allergy involves an immune reaction to dairy proteins.

A possible dairy allergy may cause:

Itching
Skin redness
Hair loss
Recurring ear problems
Vomiting
Diarrhea
Facial swelling

These symptoms may have many causes. A veterinarian may recommend a controlled elimination diet if food allergy is suspected.

Can Cats Drink Cow’s Milk?

Cow’s milk is not recommended as a regular drink for cats.

Many adult cats do not produce enough lactase to digest it properly. Cow’s milk may cause diarrhea, gas, bloating, or vomiting.

Milk also adds fat and calories without providing complete feline nutrition.

Is Milk Toxic to Cats?

Plain cow’s milk is not usually considered toxic in the same way as garlic, onion, chocolate, or alcohol.

However, non-toxic does not mean healthy. A cat may still become unwell because of lactose intolerance, fat, or excessive intake.

How Much Milk Can a Cat Have?

There is no need to give cats cow’s milk. If a healthy adult cat has previously tolerated dairy and your veterinarian has no concerns, only a few licks should be offered.

Do not give a full bowl. Fresh water should always remain the main drink.

Can Kittens Drink Cow’s Milk?

No. Cow’s milk should not replace a mother cat’s milk or commercial kitten milk replacer.

Cow’s milk does not match the nutritional composition kittens need and may cause:

Diarrhea
Dehydration
Poor growth
Nutritional deficiencies

Orphaned or rejected kittens should receive a veterinarian-recommended kitten milk replacer.

Different Types of Milk for Cats

Type of Milk	Recommended?	Main Concern
Cow’s milk	Generally avoid	Lactose, fat, and digestive upset
Goat’s milk	Not routinely recommended	Still contains lactose and calories
Lactose-free cow’s milk	Only occasionally	Still contains calories and dairy proteins
Commercial cat milk	Occasionally	Still a treat, not a meal or water replacement
Plant-based milk	Usually unnecessary	Sugar, flavoring, oils, thickeners, or unsafe additives
Kitten milk replacer	Yes, when needed	Use only as directed for kittens

Can Cats Drink Goat’s Milk?

Goat’s milk is sometimes described as easier to digest, but it still contains lactose and can cause diarrhea or gas.

It is also calorie-dense and does not provide complete feline nutrition.

Can Cats Drink Lactose-Free Milk?

A few licks of plain lactose-free milk may be easier for some cats to digest.

However, lactose-free milk still contains dairy proteins, fat, and calories. Cats with a dairy allergy may still react.

Is Commercial Cat Milk Safe?

Commercial cat milk is usually formulated with reduced lactose and may be tolerated better than cow’s milk.

It should still be treated as an occasional snack. It should not replace fresh water or complete cat food.

Can Cats Drink Almond, Oat, Coconut, or Soy Milk?

Plant-based milk is not necessary for cats and may contain:

Added sugar
Flavoring
Vegetable oils
Thickeners
Chocolate
Artificial sweeteners
Other additives

Some cats may also react poorly to soy or nut-based ingredients.

Fresh water is a safer choice.

Can Cats Eat Yogurt?

Some cats may tolerate a very small amount of plain, unsweetened yogurt.

Yogurt is fermented, so it may contain less lactose than milk. However, it still contains dairy proteins and may still upset a lactose-intolerant cat.

Yogurt should be:

Plain
Unsweetened
Unflavored
Free from chocolate
Free from coffee or caffeine
Free from grapes or raisins
Free from artificial sweeteners
Served only in a tiny amount

Yogurt Cats Should Avoid

Vanilla yogurt
Fruit-flavored yogurt
Chocolate yogurt
Sweetened yogurt
Yogurt with granola or nuts
Dessert-style yogurt
Yogurt containing artificial sweeteners

Can Cats Eat Greek Yogurt?

Plain Greek yogurt may contain less lactose than regular yogurt because some liquid whey is removed during straining.

This may make it easier for some cats to tolerate, but it does not make Greek yogurt suitable for every cat.

Possible concerns include:

Remaining lactose
Dairy protein sensitivity
Fat content
Excess calories
Added sugar
Artificial sweeteners

If you choose to offer Greek yogurt, use plain, unsweetened yogurt with a simple ingredient list.

How Much Greek Yogurt Can a Cat Have?

For a healthy adult cat trying it for the first time, offer no more than a small lick or approximately one-quarter teaspoon.

Monitor for digestive symptoms over the next 24 hours. Do not continue feeding it if your cat develops gas, vomiting, diarrhea, or appetite changes.

Does Yogurt Provide Probiotic Benefits?

Some yogurt contains live bacterial cultures. However, yogurt should not automatically be treated as a reliable probiotic supplement for cats.

The bacterial strains and quantities in human yogurt may not match those studied for feline digestive health. Some organisms may also not survive storage or digestion in useful amounts.

If your veterinarian recommends probiotics, a feline-specific product may provide more predictable strains and dosing.

Do not use yogurt as a home treatment for ongoing diarrhea, vomiting, constipation, or inflammatory bowel disease.

Can Cats Eat Cheese?

Some cats may tolerate a tiny piece of plain cheese, but cheese is high in fat, calories, and often sodium.

Lower-lactose cheese may still cause problems in cats that are sensitive to dairy proteins or rich foods.

Cheese should never become a regular treat.

Cheese Cats Should Avoid

Garlic cheese
Onion-flavored cheese
Blue cheese
Spicy cheese
Cheese dips
Processed cheese sauce
Very salty cheese
Cheese containing herbs or unsafe seasonings

Can Cheese Be Used to Hide Medication?

Ask your veterinarian before using cheese to give medication.

Some medications should not be given with dairy, and cheese may not be appropriate for cats with obesity, pancreatitis, kidney disease, urinary disease, allergies, or prescription diets.

Other Dairy Products Cats Should Avoid

Ice Cream

Ice cream is high in lactose, sugar, fat, and calories.

It may also contain chocolate, coffee, raisins, alcohol, nuts, or artificial sweeteners.

Cream and Whipped Cream

Cream and whipped cream are rich in fat and may cause vomiting, diarrhea, or unnecessary weight gain.

Butter

Butter provides little nutritional value and is extremely high in fat.

Large amounts may cause digestive upset or contribute to pancreatitis in susceptible cats.

Flavored Dairy Products

Avoid dairy products containing:

Chocolate
Coffee
Caramel
Raisins
Alcohol
Artificial sweeteners
Large amounts of sugar
Garlic or onion seasoning

How Much Dairy Can Cats Have?

Dairy and all other treats combined should generally account for no more than approximately 10% of daily calories.

For many cats, an appropriate dairy trial is only:

A few licks of milk
One-quarter teaspoon of yogurt
A crumb-sized piece of plain cheese

These are occasional trial amounts, not daily serving recommendations.

For complete treat guidance, read our complete cat treat guide.

How to Introduce Dairy Safely

Choose a plain product: Avoid flavors, sugar, sauces, and sweeteners.
Read the ingredient list: Check for chocolate, coffee, raisins, alcohol, garlic, onion, or artificial sweeteners.
Offer a tiny amount: Start with only a lick or small taste.
Introduce one food at a time: This makes reactions easier to identify.
Monitor for 24 hours: Watch for diarrhea, vomiting, gas, itching, or reduced appetite.
Stop after a reaction: Do not continue testing a food that causes symptoms.
Count the calories: Deduct dairy treats from the daily treat allowance.

When Should Cats Avoid Dairy?

Dairy may be unsuitable for cats with:

Known lactose intolerance
Dairy allergy
Chronic diarrhea
Inflammatory bowel disease
Pancreatitis
Obesity
Diabetes
Kidney disease
Heart disease
A prescription diet
A veterinary elimination diet

Kittens should not receive cow’s milk instead of kitten milk replacer.

What If Your Cat Eats Too Much Dairy?

A cat that consumes a large amount of milk, yogurt, cheese, cream, or ice cream may develop digestive problems.

Watch for:

Vomiting
Diarrhea
Gas
Bloating
Abdominal discomfort
Reduced appetite
Lethargy
Restlessness

What to Do

Remove the remaining product.
Check the label for unsafe ingredients.
Estimate how much your cat consumed.
Provide access to fresh water.
Monitor for symptoms.
Contact your veterinarian if symptoms are persistent or severe.

Contact a veterinarian promptly if the dairy product contained:

Chocolate
Coffee or caffeine
Alcohol
Garlic
Onion
Grapes or raisins
Unknown artificial sweeteners

Seek Urgent Care If Your Cat Has

Repeated vomiting
Severe or bloody diarrhea
Difficulty breathing
Collapse
Tremors
Seizures
Extreme weakness
Facial swelling
Pale or blue gums

Safer Alternatives to Dairy

Cats do not need dairy to enjoy a treat.

More species-appropriate options include:

Part of your cat’s regular wet food
Measured pieces of regular kibble
Small pieces of plain cooked chicken
Plain cooked turkey
Plain cooked fish in tiny amounts
Freeze-dried meat treats made for cats
Veterinarian-approved dental treats

For broader food-safety guidance, read our human foods cats can and cannot eat guide.

Frequently Asked Questions

Can cats drink milk?

Many adult cats are lactose intolerant, so cow’s milk may cause diarrhea, gas, bloating, or vomiting. Fresh water is the better drink.

Is milk toxic to cats?

Plain milk is not usually toxic, but it may cause digestive upset and adds unnecessary fat and calories.

Can kittens drink cow’s milk?

No. Cow’s milk does not meet a kitten’s nutritional needs. Use veterinarian-recommended kitten milk replacer when necessary.

Can cats drink goat’s milk?

Goat’s milk still contains lactose and may cause digestive upset. It is not necessary for cats.

Can cats drink lactose-free milk?

A few licks may be tolerated by some cats, but it still contains dairy proteins, fat, and calories.

Is cat milk safe?

Commercial cat milk is usually lower in lactose and may be offered occasionally. It should not replace water or complete cat food.

Can cats drink almond milk?

Almond milk is unnecessary and may contain sugar, oils, flavoring, or unsafe additives.

Can cats drink oat milk?

Plain oat milk is not usually toxic in a tiny amount, but it offers little benefit and may contain added sugar or flavoring.

Can cats eat yogurt?

Some cats may tolerate a tiny amount of plain, unsweetened yogurt, but many will develop digestive symptoms.

Can cats eat Greek yogurt?

Plain Greek yogurt may contain less lactose than regular yogurt, but it should only be offered in a very small amount.

Is Greek yogurt better than regular yogurt for cats?

Greek yogurt may contain less lactose, but it is not automatically safe or beneficial. Dairy intolerance and calorie content remain concerns.

Is yogurt a good probiotic for cats?

Human yogurt does not provide predictable feline probiotic strains or doses. Use a veterinarian-recommended feline probiotic when needed.

Can I give yogurt to a cat with diarrhea?

No. Dairy may worsen diarrhea in lactose-intolerant cats. Contact a veterinarian to identify the cause.

Can cats eat vanilla yogurt?

Vanilla yogurt often contains added sugar, flavoring, or artificial sweeteners and is not recommended.

Can cats eat flavored yogurt?

Flavored yogurt should be avoided because it may contain sugar, chocolate, fruit syrup, raisins, or unsafe additives.

How much Greek yogurt can a cat eat?

Start with no more than a small lick or approximately one-quarter teaspoon. Stop if digestive symptoms develop.

Can cats eat cheese?

Some cats tolerate a crumb-sized amount of plain cheese, but cheese is high in fat, calories, and sodium.

Can cats eat ice cream?

No. Ice cream is high in lactose, fat, and sugar and may contain toxic ingredients.

Can cats eat butter?

Butter is high in fat and provides no useful nutritional benefit. It may cause digestive upset.

How do I know if my cat is lactose intolerant?

Diarrhea, gas, bloating, vomiting, or abdominal discomfort after eating dairy may indicate lactose intolerance.

Can cats be allergic to dairy?

Yes. A dairy allergy may cause itching, skin problems, vomiting, diarrhea, or recurring ear inflammation.

Can cats have dairy every day?

No. Dairy is unnecessary and may contribute to digestive problems, weight gain, or nutritional imbalance.

What should I do if my cat eats too much dairy?

Check the ingredients, offer fresh water, monitor for vomiting or diarrhea, and contact your veterinarian if symptoms are severe or persistent.

Final Thoughts

Cats do not need milk, yogurt, Greek yogurt, cheese, or other dairy products to maintain a healthy diet.

Many adult cats are lactose intolerant and may develop diarrhea, gas, bloating, or vomiting after eating dairy.

Plain Greek yogurt may contain less lactose than milk or regular yogurt, but it can still cause problems. If offered at all, it should be plain, unsweetened, and limited to a tiny amount.

Cow’s milk should never replace kitten milk replacer, and fresh water should remain the primary drink for cats of every age.

Avoid flavored dairy products, ice cream, rich cream, cheese sauces, and anything containing chocolate, coffee, raisins, alcohol, garlic, onion, or artificial sweeteners.

When in doubt, use a cat-specific treat or a small portion of complete cat food instead of dairy.

Can Cats Have Dairy?