Once you find the right type of wet food, you need to figure out how much to feed your cat. General guidelines are available for how much wet food to feed cats of any shape and size. For example, a 5-pound cat with a lean body type needs about 170 calories per day, and a 10-pound cat with a lean body type needs about 280 calories per day.
While the specifics vary from brand to brand and between different types of canned food, as a very rough guideline, a 3-ounce can of cat food has around 70 to 100 calories, so the average adult cat would need to eat two or three cans of food per day. However, you should always take your cat's size, age, and health into account when deciding on the proper amount of food.
Discover how much wet food your cat needs below.
Why Do Cats Need Wet Food?
Many veterinarians recommend that cats eat a diet of exclusively or mostly wet food. There are a couple of reasons for this. First, cats are obligate carnivores and are not designed to ingest many carbohydrates (if any). Dry food will automatically contain many more carbohydrates than wet food. For many cats, dry food consumption leads to obesity.
Secondly, most cats are not big water drinkers and tend to keep themselves on the edge of dehydration. Wet food naturally provides more water in the diet, which supports the kidneys, urinary tract, and overall health.
Should You Feed Your Cat Both Wet and Dry Food?
First, determine if you will be feeding your cat a 100 percent wet food diet or including some dry food. While the gold standard is to feed all wet food to cats, some cats love dry food and will undereat if they are only given wet food. In addition, dry food is more affordable, so feeding part dry will be easier on your budget.
Feeding a mix of wet and dry may require a bit of math to make sure your cat is getting the appropriate number of calories. One easy starting point is to look at the recommended daily feeding amounts on each type of food and halve them.
Once you have settled on the ratio of wet-to-dry, it's time to determine the calorie count of the food. Make sure you are feeding a quality diet that's listed as "complete and balanced" by AAFCO. Then, determine the number of calories per portion.
How Much Wet Food Does Your Cat Need?
Your cat's caloric needs depend on several factors. Your cat's weight can give you a basic guideline of how much to feed. However, it's essential to determine your cat's body condition. A lean, muscular cat with a large frame may weigh 15 pounds and be at a healthy weight. This cat will require more calories to maintain that healthy weight. However, a 15-pound cat with a more petite frame will be overweight and need fewer calories. The overweight cat should be fed according to its ideal weight, not its actual weight.
Age and activity level also play a role in determining the proper amount of calories needed. A growing kitten needs many more calories than an adult or senior cat. An active cat that runs and plays frequently will need more calories than a cat that remains sedentary most of the time. A nursing mother needs extra calories to produce milk and stay healthy.
If you wish to be accurate in calculating the number of calories you feed your cat, then start by finding out how many calories your cat needs. The National Research Council offers a general guideline of nutritional needs of cats:
- Young kittens (2-6 months old) are growing rapidly and have high nutritional needs. General guidelines for this age group are outlined in the chart above.
- Be sure to feed a diet formulated for kittens since they have different requirements for calcium and other minerals than adult cats.
- Nutritional needs will begin to drop off after 6 months of age for most kittens as growth slows.
Lean Domestic Cats
- A 5-pound cat with a lean body type needs about 170 calories per day.
- A 10-pound cat with a lean body type needs about 280 calories per day.
- A 15-pound cat with a lean body type needs about 360 calories per day.
- A 20-pound cat with a lean body type needs about 440 calories per day.
Overweight Domestic Cats
- An overweight 5-pound cat needs about 180 calories per day.
- An overweight 10-pound cat needs about 240 calories per day.
- An overweight 15-pound cat needs about 280 calories per day.
- An overweight 20-pound cat needs about 310 calories per day.
- Pregnant cats should consume their usual diet and number of calories until 4-5 weeks after breeding. They can then be switched to a kitten or growth diet and the amount fed should be increased.
- A 5-pound pregnant cat needs about 240 calories per day.
- A 10-pound pregnant cat needs about 390 calories per day.
- A 15-pound pregnant cat needs about 510 calories per day.
- A 20-pound pregnant cat needs about 610 calories per day.
- Nursing queens should be free-fed a growth or lactation diet.
- The queen's calorie intake will be determined by the number and age of the kittens.
- Some queens with large litters may need to eat 3-4 times their usual number of calories.
- Unlike dogs, cats will consistently lose weight while nursing their kittens despite eating as much as they can.
Cat Food Guidelines
It's acceptable to use the feeding recommendations on the packaging as a starting point for how much to feed. The website for the diet may go into greater detail about feeding guidelines. The amount you feed may need to be adjusted based upon how your cat responds. If you notice undesired weight gain or loss, the amount should be adjusted. If your cat seems extremely hungry and is not gaining weight, it's acceptable to increase the amount you feed.
Many wet foods come in three-ounce cans and recommend feeding approximately one can a day for every three to three and a half pounds of body weight. However, brands vary.
A happy, healthy cat will maintain a good weight and stay active. A properly fed cat will not act hungry all the time but will also maintain a healthy weight.
Remember to visit your veterinarian for annual or biannual wellness exams to make sure your cat is as healthy as possible.
How long can wet cat food sit out?
Two hours. If your kitty doesn't eat it all in one sitting, offer smaller portions a few times a day.
Why won't my cat eat wet food?
If your cat won't eat wet food, it could be because they prefer the texture of dry or moist food, or that they like their food at a different temperature. If your cat refuses to eat completely, you need to call your veterinarian ASAP.
Why does my cat try to bury her wet food?
Many cats try to bury their food when they have finished eating. It's instinctual: Cats bury their food to keep it safe from predators.
Complete And Balanced Pet Food. U.S. Food And Drug Administration, 2020.
Your Cat's Nutritional Needs. Dels.Nas.Edu, 2020.