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Everything You Need to Know About Cats and Milk

February 15, 2019

It’s a well-known fact that cats are often depicted with a saucer of milk, but the truth is more complicated. Although the image of cats and milk seems like an age-old match, milk is not ideal for your feline friends. This article dives into the myth of cats and milk, revealing why adult cats can become lactose intolerant, similar to many humans. Learn why kittens need milk initially but outgrow this dependency, and discover safe alternatives if your pet craves that creamy taste. Our comprehensive guide also offers insights on whether dairy products like cheese and yogurt are safe for your cat, along with healthier options like commercially available “cat milk.”

Your cat and milk seems like a match for the ages. Indeed, our feline friends might love lapping up a full saucer of milk if it’s given to them. You might be surprised to learn, though, that milk isn’t good for cats at all! Your Waterdown, ON veterinarian explains below.

Why Isn’t Milk Good for Cats?

Most adult cats are actually lactose-intolerant, meaning that they can’t tolerate too much lactose—milk’s primary enzyme—in their digestive systems. This is the same condition that affects many humans! Your cat might enjoy drinking milk, but the milk isn’t likely to return the favor. A cat who drinks too much milk will experience an upset stomach at the very least, and is likely to demonstrate diarrhea or vomiting if they ingest a large amount.

Don’t Kittens Require Milk?

You might be wondering about kittens, who do in fact require their mother’s milk during the early stages of life. (If the mother isn’t around, a synthetic substitute milk product can be given.) These early weeks are the only time in a cat’s life cycle, actually, during which milk is a nutritional requirement. As a kitten gets older, they start to produce less and less lactase in the gut, which is the enzyme that helps to digest lactose. Once a kitten has grown into an adult cat, it’s likely that they don’t possess nearly enough lactase to digest lactose, thereby becoming lactose-intolerant.

Can I Feed My Cat Any Dairy?

Other dairy foods, like cheese or yogurt, don’t have as much lactose in them as milk does; this means they’re less likely to cause harm to your pet. However, dairy food of any kind isn’t nutritionally necessary for your cat, and too much of any foreign food is likely to cause an upset stomach, vomiting, or diarrhea. If you must feed your cat dairy foods, keep the portion size extremely small.

A much better idea is a commercially available “cat milk,” which is a milk product that has had all lactose removed. This allows you to give your cat the taste she loves without any of the harmful side effects! Also, it’s important to keep in mind that your cat only needs one liquid to stay healthy: fresh water. Speaking of cat food, it’s crucial to store it properly to maintain its nutritional value. Learn more about common mistakes to avoid in our article on Cat Food Storage Mistakes.

Cats and Milk in 2024: Safe Alternatives and Nutritional Considerations

Are there milk alternatives safe for cats?

While most adult cats are lactose intolerant and can’t digest regular milk, there are safe alternatives available. ‘Cat milk’ is a commercially available option where lactose is removed, providing a safe treat for cats who enjoy the taste without the digestive upset. Additionally, some dairy products like cheese and yogurt have lower lactose levels, but these should only be given in small portions. The healthiest liquid for your cat is always fresh water, and dairy should never replace their nutritional needs. For more tailored advice, consult a vet for a personalized nutrition plan.

Why do cats crave milk despite potential health issues?

Cats often crave milk due to their instinctual behavior and past associations with comfort and nourishment, particularly as kittens. The creamy texture and fat content of milk can be appealing, mimicking the rich nutrients found in their mother’s milk. Despite this attraction, most adult cats are lactose-intolerant, meaning they lack the enzyme lactase needed to digest lactose, the sugar in milk. This can lead to digestive issues like diarrhea and vomiting. To satisfy your cat’s craving safely, consider lactose-free cat milk, which provides the taste they love without harmful side effects.

Can kittens drink milk other than their mother’s?

Kittens can drink milk other than their mother’s, but it should be a specially formulated milk substitute designed for kittens. This ensures they receive the necessary nutrients for healthy development. Cow’s milk or other dairy products are not suitable substitutes because kittens may struggle to digest lactose, which can lead to upset stomachs, diarrhea, or vomiting. As kittens grow older, they produce less lactase, the enzyme needed to digest lactose, making them lactose-intolerant. It’s essential to provide the right nutrition to support a kitten’s growth and development during this crucial stage.

How does a cat’s age affect its ability to digest milk?

As cats age, their ability to digest milk decreases significantly. Kittens require their mother’s milk early in life, which is rich in lactose. During this period, they produce lactase, the enzyme needed to digest lactose. However, as cats grow and wean off milk, their bodies produce less lactase. By the time they reach adulthood, most cats become lactose intolerant, lacking the necessary enzyme to process lactose effectively. Consequently, adult cats drinking milk often experience digestive upset, such as diarrhea or vomiting. Therefore, milk is not recommended for adult cats.

What are the signs that a cat is lactose intolerant?

A lactose-intolerant cat will typically exhibit digestive issues after consuming milk or dairy products. Common signs include diarrhea, vomiting, and stomach upset, which may be accompanied by gas or bloating. These symptoms occur because lactose-intolerant cats lack sufficient lactase, the enzyme needed to digest lactose in milk. Watch for changes in litter box habits, such as frequent or loose stools, and observe any signs of abdominal discomfort. If these symptoms appear after dairy consumption, it’s likely your cat is lactose intolerant. Providing water and lactose-free cat milk is a safer alternative.

Do you have questions about your cat’s nutrition or dietary needs? Our Vet Nutrition & Weight Management service can provide personalized advice on your cat’s diet, including whether dairy products are appropriate for your specific pet. We can help create a tailored nutrition plan that ensures your cat gets all the necessary nutrients without any potentially harmful foods. We’re always here to help. Set up an appointment today with your Waterdown, ON veterinary clinic.

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