Can Cats Eat Vegetables?
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Can Cats Eat Vegetables?

Updated: August 25, 2024

Although carbs make up the smallest part of a feline diet, cats can eat vegetables in moderate amounts.

However, not every vegetable is equally safe for a cat, and some are straight-up poisonous.

Before giving your cat a bite of your vegetable casserole or sweet potato fries, learn about the risks, potential side effects, and lasting consequences.

A common mistake of cat owners is assuming that anything healthy for humans is healthy for cats, but different species have different dietary needs.

Vegetables bring more risks than benefits to felines, but this doesn’t mean that they can’t serve as an occasional treat.

Are Vegetables Safe For Cats?

Unlike dogs, which are omnivores and can digest nearly unlimited amounts of carbs, cats are carnivores that feed primarily on meat. For this reason, the feline gastroenteric tract is unable to digest over 20% of carbohydrates.

This fact leads us to a conclusion – foods high in carbs are unhealthy for cats if consumed in large amounts. A cat can’t be a vegetarian, and the reason isn’t a lack of moral ground.

However, vegetables in small amounts are generally safe for cats. Most veggies don’t contain toxic elements that could kill a cat, but there are exceptions every owner should be aware of.

Note that vegetables are only safe for healthy cats without special dietary requirements or underlying medical conditions. For example, vegetables aren’t a good snack for cats with obesity, diabetes, and irritable bowel syndrome.

The cooking method also plays a role. Some vegetables, like cucumbers, are easy enough for a cat to chew when they’re fresh.

However, hard veggies like carrots should be boiled or steamed to avoid damaging the cat’s teeth and eliminate a choking hazard.

The vegetables should be cooked without any spices and herbs because some of them are toxic to felines. Salt in large amounts can also be dangerous.

Remember that vegetables sold in stores are typically treated with pesticides. You likely always wash veggies after bringing them home, so don’t neglect this rule when feeding veggies to your cat.

In the best-case scenario, pesticides from vegetables will cause a gastroenteric upset. In the worst-case scenario, they will be toxic and can cause seizures, organ failure, and death.

Another point to note is that not all vegetable parts are equally safe for cats. As a rule of thumb, cats can safely eat vegetable flesh but not leaves or stems.

Which Vegetables Are Safe for Cats

The answer to “are vegetables safe for cats?” is a little more complicated than “yes” or “no” because vegetables are different.

Considering the wide selection of vegetable varieties, comprising a comprehensive list of vegetables safe for cats is nearly impossible.

However, we can outline the best vegetables to incorporate into a cat’s diet. For example, broccoli is perfectly safe for cats to eat. This veggie is rich in antioxidants and fiber, improving a cat’s digestion if consumed in moderate amounts.

Most green vegetables, such as spinach, green beans, and cucumbers, are equally safe for felines. Similarly, carrots are not only safe but also healthy, providing a cat with minerals, vitamins, and fiber.

Other vegetables cats can eat are sweet potatoes, turnips, radish, beets, lettuce, corn, and cauliflower.

Which Vegetables Are Toxic For Cats

The list of vegetables toxic to cats is significantly shorter than that of safe veggies, so every feline owner should memorize it. Cats should never eat garlic, onions, scallions, chives, leeks, shallots, and eggplants.

Onions, garlic, scallions, leek, and shallots come from the same plant family, Allium, and contain the toxic oxidant n-propyl disulfide. Even tiny amounts of the toxin can cause severe poisoning symptoms and even death.

Here’s what happens if a cat eats garlic or another veggie from the Allium family: first, the toxin gets into the bloodstream and attaches to red blood cells. It then induces cell aging and impairs oxygen delivery into vital organs.

A cat’s body recognizes the toxin as an invader and strives to destroy it together with the red blood cell it’s attached to. As a result, a cat suffers from hemolysis, a red blood cell deficiency.

Garlic is the most toxic plant of the Allium family for cats – a dangerous dose of garlic is five times smaller than that of chives. If a cat ingests over 1/8 of a teaspoon of garlic, veterinary intervention is crucial.

Eggplant flesh isn’t particularly dangerous to cats, but its stems, seeds, and leaves contain cyanogenic glycosides that can cause cyanide poisoning.

Tomatoes belong to the same vegetable family as eggplants, so their leaves and stems are also poisonous to felines.

Eggplant skin tends to be chewy and can be a choking hazard, so it’s best to refrain from feeding cat eggplants entirely.

Are There Any Benefits To Feeding Cats Vegetables?

Generally, cats don’t need vegetables in their diet because they should get a sufficient amount of carbs and microelements from feline food. However, vegetables in moderate amounts can prevent vitamin and mineral deficiency in cats and improve digestion.

Most vegetables are rich in fiber, responsible for maintaining the proper function of a cat’s gastroenteric tract. Cats that don’t consume enough fiber may suffer from chronic constipation.

Vegetables are an excellent source of antioxidants, minerals, and vitamins, including iron, magnesium, manganese, potassium, niacin, vitamins A, B, C, D, and others. However, vitamin or mineral surplus can be as dangerous as a deficiency.

Risks of Feeding a Cat Vegetables

The risks of feeding cats vegetables outweigh the benefits. In the best-case scenario, excessive consumption of veggies can cause a stomach upset with symptoms including diarrhea, vomiting, bloating, and abdominal pain.

In the worst-case scenario, vegetables can cause a severe allergy or poisoning. But while immediate adverse effects are always apparent, long-term consequences are easy to neglect until it’s too late.

Excessive carb consumption can lead to obesity, heart diseases, and diabetes in felines. Since cats can’t digest large amounts of carbs, all undigested nutrients go towards fat tissue formation or cause spikes in blood sugar levels.

Thankfully, most vegetables have a low glycemic index and are safe for diabetic cats. However, some veggies, including carrots, potatoes, parsnips, and sweetcorn, are comparable to sugary fruits.

Obesity risks are especially high for neutered, spayed, and old cats because their metabolism isn’t as fast as that of kittens and young adult cats.

Certain cat breeds are more prone to obesity than others, including British, Burmese, Sphynx, Ragamuffin, and Persian.

How To Spot a Food Allergy

Food allergies in cats are more dangerous than regular stomach upset because they can manifest with respiratory, topical, and nervous system reactions. Unfortunately, vegetable allergies in cats aren’t uncommon.

Owners suspecting an allergy to specific vegetables in their cats should eliminate any exposure to the allergen.

The symptoms of food allergy in cats include vomiting, diarrhea, lethargy, increased heart rate, difficulty breathing, skin irritation, itchiness, and ear infections.

In severe cases, food allergy can cause seizures, asthma attacks, and even death. The good news is that such a powerful reaction is unlikely to develop the first time a cat tries the allergen.

Tips For Feeding Cats Vegetables Safely

If you decide to feed your cat vegetables, follow safety precautions to minimize the risks. Choose vegetables from the safe list and only feed your cat the flesh, not seeds, skin, or leaves.

Wash the vegetables carefully and cook vegetables that are too hard to chew.

Choose fresh veggies over frozen ones because they contain more healthy elements and are softer. Furthermore, felines can’t effectively break down fresh plant cell walls.

Never feed your cat vegetables cooked with herbs, spices, salt, or oil. Avoid giving it vegetable casseroles and other dishes that include a mix of veggies because they may contain toxic varieties.

Keep the servings small. Treats should account for under 10% of a cat’s total calorie intake and carbs for under 20%. Fiber shouldn’t exceed 8%. Check your cat’s food pack for the nutrient ratio to calculate a suitable serving size.

Lastly, ensure that your cat doesn’t have underlying medical conditions that could worsen from extra carbs. Consult with a vet before incorporating vegetables into your cat’s diet and conduct a full health check-up.

Why Does My Cat Eat Vegetables?

Cats often crave dairy, meat, and various fat foods but rarely fancy vegetables. But despite vegetables not being a part of the natural feline diet, house cats can develop odd food preferences.

Each cat is an individual, and determining why a cat likes vegetables is tricky. The most plausible answer to why a cat craves vegetables is – out of plain curiosity. If a cat has never tried veggies before, it may be interested in the new flavor.

However, some cats eat vegetables because they lack specific nutrients in their diet and sense that they can get them from veggies.

Some cats like the high water content of vegetables. If a cat finds tap water bland, it may eat cucumbers and other watery veggies for extra hydration.

Lastly, a cat craving vegetable casserole or another dish may be attracted to oils and spices rather than vegetables.

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