Wet Cat Food vs Dry Cat Food: Hydration, Cost, and Long-Term Health

If you’ve ever stood in the pet food aisle comparing labels, you’re not alone. With so many options, choosing the right diet for your cat can feel overwhelming. Wet and dry cat food each offer unique benefits, and the best choice depends on your cat’s health, lifestyle, and preferences.

In this article, we’ll explore wet cat food vs dry cat food: hydration, cost, and long-term health, and how each option supports your cat’s overall well-being..

Here at Tuft & Paw, we’re cat experts. We’re intimately familiar with the cat food features that are important to cats and their parents. The information in this article is based on consultation with veterinarians, online research, and our own experience as cat parents.

Understanding Cat Nutrition: The Basics

Cats are obligate carnivores, meaning proper cat nutrition requires a diet that is high in protein, moderate in fat, and low in carbohydrates. When shopping for cat food, look for one that contains high-quality protein, such as chicken, turkey, fish, or rabbit, as the first ingredient. It’s usually recommended that cat food have a protein content of at least 30-40%. Other essential nutrients to look for in cat food include:

• Taurine, an essential amino acid found in animal protein, that supports heart, eye, gut, and immune health.

• Arginine, an essential amino acid that helps with ammonia detoxification and protein synthesis.

• Preformed vitamin A, also known as retinol, which is found in animal sources and is important for vision and immune health.

• Arachidonic acid, an essential omega-6 fatty acid that helps with blood clotting, reproduction, and immune health.

The Association of American Feed Control Officials (AAFCO) establishes guidelines for complete and balanced nutrition. When buying cat food, choose one with an AAFCO statement. This shows it has a nutritional guarantee and is complete for your cat. Cats also have different nutritional needs at different stages of their lives. While some cat foods are formulated for all stages, others are specific to kittens or senior cats. 

At-a-Glance: Wet Cat Food vs. Dry Cat Food 

Which Is Best for Your Cat? Quick Decision Guide

While both wet and dry cat food have their benefits, what’s best for your cat depends on their specific needs.

• Choose wet food if your cat doesn’t drink much water, has urinary or kidney concerns, is a picky eater, or is on a weight management plan

• Choose dry food if you need a budget-friendly option, prefer free-feeding, or use automatic feeders

• Choose a mixed food diet if you’re looking to balance the benefits of wet food with cost

Wet Cat Food vs. Dry Cat Food: Which Is Better for Hydration?

Because cats’ ancestors lived in the desert and got most of their hydration from eating their prey, they have evolved to have a low thirst drive.  “Because of this, many cats eating only dry food don’t drink enough to compensate, which can leave them dehydrated over time,” says Dr. Nathaniel Rakestraw, veterinarian with TelaVets.com.

Feeding your cat wet cat food can help them stay hydrated, as the moisture content in wet cat food is much higher than that in dry kibble. Dr. Vasudevan, a vet at Embrace Pet Insurance, says that drinking more water helps dilute urine. This can lower the risk of crystals and stones and support overall feline urinary health. It also helps prevent issues like feline lower urinary tract disease (FLUTD). For cats with kidney disease, hydration helps support kidney function over time.

Can Dry Food Cats Stay Hydrated?

Dr. Rakestraw says that dry cat food is appropriate for healthy cats, provided they maintain good hydration.  Placing multiple water bowls throughout the house and refilling them frequently can help. Some cat owners also note that their cats drink more when provided with a water fountain. Other methods include flavoring your cat’s water with the juice from canned tuna or low-sodium chicken broth, or soaking their dry food in water. 

Cost Comparison: Wet vs. Dry Cat Food Over Time

The average monthly costs to feed your cat are about $50-$100+ per month for wet food and about $10-$30 for dry food. However, costs can vary depending on brand quality and portion size. While wet food is more expensive upfront, it can save you potential costs of hydration-related illnesses down the line. Some cat owners also choose to feed their cat a mixed diet, meaning a combination of wet and dry food, to help support their cat’s hydration levels while reducing overall costs. Bulk buying and subscription options can help to further reduce costs.

Long-Term Health: Which Supports a Healthier Lifestyle?

In most categories, wet cat food comes out on top when supporting a healthier lifestyle long term:

• Urinary tract health: The high moisture content in wet cat food lowers the risk of developing urinary crystals and infections. Dr. Rakestraw says that for cats with kidney problems, staying hydrated is crucial. Offering wet food is an easy way to boost their water intake. 

• Dental health: Dry food’s crunchy texture can help to remove plaque from teeth. However, many cats swallow kibble whole, meaning that they’re missing out on the dental benefits of a dry food diet. The exception is some dental diet foods, which are specifically formulated to reduce tartar.

• Cat weight management: While feeding your cat the right amount of calories for their weight and activity level is what matters most, cats who eat predominantly dry food are at higher risk of being overweight. “Wet food can be helpful for weight management because it’s lower in calorie density and higher in water content, so cats feel fuller on fewer calories,” says Dr. Vasudevan.

• Diabetes risk: Dry cat food contains higher levels of carbohydrates, so that kibble can keep its shape. However, these higher levels of carbs can impact your cat’s blood sugar. Because wet cat food is usually lower in carbohydrates, a wet cat food diet can help prevent these blood sugar spikes.

• Digestive health: Wet food’s soft texture can be easier to digest. Its higher moisture content is also helpful for digestion, as dehydration can lead to constipation.

• Senior cats: Senior cats often need more water as their kidney function decreases and they become less sensitive to thirst signals. For this reason, wet food can be a better choice for senior cats. 

The Verdict: “There isn’t strong, universal evidence that wet food alone leads to longer lifespans compared to dry food, but there is good evidence that higher moisture intake supports urinary tract health,” says Dr. Vasudevan. This might mean feeding your cat a wet food diet or ensuring that they’re drinking enough water if you’re predominantly feeding dry kibble.

Wet Cat Food: Pros and Cons

Often a good choice for cats with urinary issues, picky eaters, senior cats, and cats that don’t drink enough water

Pros:

• High moisture content

• More appealing to cats

• Supportive of urinary tract health and blood sugar control

• Easier cat weight management

• Easier to chew for seniors and kittens

Cons:

• Higher cost

• Shorter shelf life once opened

• No possible dental benefits

• Less convenient

Dry Cat Food: Pros and Cons

Often a good choice for healthy adult cats and cat owners on a budget

Pros: 

• Cost effective

• Longer shelf life after opening

• More convenient

• Possible dental benefits

• Can be used in automatic feeders and puzzle toys

Cons: 

• Lower moisture

• Higher carbs

• Higher risk of urinary tract issues and obesity

• Some cats don’t enjoy

Should You Feed Your Cat a Mixed Diet?

“Most of the time, veterinarians recommend feeding a mix of wet and dry as it gives you the best of both worlds—added hydration from wet food and the convenience of dry,” says Dr. Vasudevan. Some cat owners choose to top their cat’s kibble with wet cat food. Others will feed their cat one meal of wet cat food and one meal of dry cat food per day.

When feeding a mixed diet, the most important thing is to ensure that you’re not overfeeding your cat. To do this, start by calculating your cat’s daily caloric needs. Then, check your cat’s food for calorie content and split your cat’s calories between wet and dry food. Some people prefer to do a 50/50 split of wet food and dry food, while others prefer a split of 75% dry food and 25% wet food. Talk with your vet to find the best balance for your cat. 

The Final Verdict: Wet Cat Food vs. Dry Cat Food

“Both wet and dry diets can be healthy as long as they are complete, balanced, and appropriate for the individual cat,” reminds Dr. Rakestraw. For most cats, a wet or mixed diet offers the best balance of hydration, nutrition, and practicality. However, as a cat owner, your goal is to meet your cat’s nutritional needs with food that they’ll eat. This means a well-balanced, commercial diet that considers your cat’s health and weight, as well as your budget. If you’re unsure if your cat’s food is meeting their needs, or if your cat has health conditions, consult your vet about the best way to optimize their diet. 

Frequently Asked Questions

Is wet cat food healthier than dry cat food?

Wet cat food offers unique benefits, such as higher hydration and protein content. However, wet food can be more expensive. Feeding a mixed food diet can help balance the benefits of wet cat food with budget.

Can cats live on dry food alone?

Yes, cats can live on dry food alone, provided it is a high-quality kibble that meets nutrition standards. However, dry food is low in moisture, so it’s important to ensure that your cat is drinking enough water to stay hydrated.

Does dry food help clean cats’ teeth?

The abrasive nature of dry cat food can help to keep cats’ teeth clean. However, many cats swallow their kibble whole, so they miss out on this benefit. Feeding your cat dry food is also not a replacement for brushing your cat’s teeth.

What’s the best cat food for feline urinary health?

Wet cat food is best for feline urinary health because the higher water content helps to prevent urinary crystals and infections. However, for cats who have existing urinary health issues, your vet will likely recommend a prescription diet.

Sources

Cornell Feline Health Center. (n.d.). Feeding your cat. Cornell University College of Veterinary Medicine. https://www.vet.cornell.edu/departments-centers-and-institutes/cornell-feline-health-center/health-information/feline-health-topics/feeding-your-cat

Öhlund, M., Palmgren, M., & Holst, B. S. (2018). Overweight in adult cats: a cross-sectional study. Acta veterinaria Scandinavica, 60(1), 5. https://doi.org/10.1186/s13028-018-0359-7