How to Read Cat Food Expiration Dates and Store Wet Food Safely

As a devoted cat parent, you want every meal to be safe, nutritious, and delicious for your feline friend. But with so many cans, pouches, and bags lining your pantry shelves, understanding cat food expiration dates and proper storage can feel like decoding a secret language. Misreading a date or storing wet food incorrectly can lead to spoilage, nutrient loss, or even health risks for your cat. That’s why we’ve created this essential guide to help you navigate expiration codes and master wet food storage tips.

In this article, you’ll learn how to read common date formats, spot signs of spoilage, and extend the shelf life of your cat’s favorite meals. We’ll also share best practices for storing opened and unopened wet cat food, so every serving is as fresh as the day it was made. Whether you’re a new pet parent or a seasoned pro, these insights will keep your cat happy and healthy.

Understanding Cat Food Expiration Dates: What Do Those Codes Mean?

Cat food expiration dates are your first line of defense against feeding spoiled products. Most manufacturers, including Weruva, print a “best by” or “use by” date on the can, pouch, or bag. This date indicates the period during which the food retains its peak nutritional value and flavor when stored properly. For wet cat food, that date is typically 2–3 years from production, while dry food lasts about 12–18 months from the manufacturing date.

But what about those cryptic codes you sometimes see—like “A1234” or “LOT 5678”? These are lot numbers or production codes used for traceability. They often include the date of manufacture (e.g., the first digit might represent the year, the next three the day of the year). If you’re ever unsure, contact the brand’s customer service. For Weruva products, you can always check the clearly printed “best by” date on the bottom of the can or the back of the pouch. Always prioritize that date over any lot code.

• Always check the “best by” or “use by” date before feeding your cat.
• Lot codes are for manufacturer tracking, not for consumer use.
• Wet food typically lasts 2–3 years unopened; dry food lasts 12–18 months.

How to Store Unopened Wet Cat Food for Maximum Shelf Life

Proper storage of unopened wet cat food is simple but crucial. Keep cans and pouches in a cool, dry place away from direct sunlight, heat sources, and humidity. Ideal temperatures range from 50°F to 70°F (10°C to 21°C). Avoid storing them in garages, basements, or near stoves where temperature fluctuations can accelerate spoilage. Stack cans carefully to prevent dents or damage that could compromise the seal.

If you live in a warm climate or are stocking up, consider rotating your stock using the “first in, first out” method. Place newer purchases behind older ones so you use the oldest cans first. This habit ensures your cat always eats food within its optimal freshness window. For example, if you buy a case of Steak Frites Recipe Plus, check the date and arrange accordingly. Properly stored, unopened wet food will stay safe and tasty right up to the expiration date.

• Store unopened wet food in a cool, dry place (50–70°F).
• Avoid direct sunlight, heat, and humidity.
• Rotate stock: use older cans first.

Storing Opened Wet Cat Food: Keep It Fresh and Safe

Once you open a can of wet cat food, the clock starts ticking. Opened wet food should be covered tightly and refrigerated immediately. Transfer any uneaten portion to an airtight container or cover the can with a plastic lid designed for pet food cans. Never leave opened food at room temperature for more than two hours, as bacteria can multiply rapidly. Refrigerated wet food stays fresh for up to 3–5 days, but always check for off smells or changes in texture before serving.

For single-serving pouches or trays, like those from Weruva’s line, you can often feed the entire portion in one meal. If your cat doesn’t finish it, follow the same refrigeration rule. Some pet parents prefer to portion food into ice cube trays and freeze it for later. Freezing can extend the life of opened wet food for up to 3 months, though texture may change slightly. Thaw frozen portions in the refrigerator overnight and serve at room temperature for best palatability.

• Refrigerate opened wet food immediately in an airtight container.
• Use within 3–5 days; discard if it smells or looks off.
• Freeze portions in ice cube trays for longer storage (up to 3 months).

Signs of Spoilage: When to Throw Out Cat Food

Even with careful storage, wet cat food can spoil. Before serving, always inspect the food for signs of spoilage. Common red flags include a sour or rancid odor, mold growth (green, white, or black spots), a swollen or bulging can (which may indicate bacterial gas production), or a change in color or texture. If the food looks watery, separated, or has an unusual slimy film, discard it immediately. Never taste the food yourself—your nose and eyes are reliable enough.

For dry food, spoilage signs include a stale or musty smell, visible insects or larvae, or a greasy appearance. Even if the expiration date hasn’t passed, if the food looks or smells off, err on the side of caution and throw it away. Your cat’s health is worth more than a single meal. If you’re ever in doubt, contact the manufacturer. Weruva stands behind their products, and they can provide guidance if you suspect a quality issue.

• Watch for sour smell, mold, bulging cans, or texture changes.
• Dry food spoilage includes stale odor, insects, or greasy look.
• When in doubt, throw it out—better safe than sorry.

Best Practices for Feeding Your Cat Wet Food Safely

Beyond storage, how you serve wet food affects both safety and enjoyment. Always wash your hands before handling cat food and use clean utensils. Serve the food at room temperature—cold food straight from the fridge can be less appealing and may upset sensitive stomachs. To warm it, place the sealed container in a bowl of warm water for a few minutes, or microwave it for 10–15 seconds in a microwave-safe dish (stir well to avoid hot spots).

For cats who are picky eaters, mixing in a topper or mixer can enhance flavor and nutrition. Consider offering a variety of proteins and textures to keep mealtime exciting. Weruva’s recipes like Tuna & Duck Double Dare or Pumpkin Lickin' Chicken provide balanced nutrition with high moisture content, which supports hydration and kidney health. Always follow the feeding guidelines on the label and adjust based on your cat’s age, weight, and activity level.

• Serve wet food at room temperature for best palatability.
• Warm food gently—never microwave in the can.
• Mix up proteins and textures to prevent boredom.

Mastering cat food expiration dates and wet food storage is a simple yet powerful way to protect your cat’s health and ensure every meal is safe and delicious. By following these guidelines—decoding dates, storing properly, and recognizing spoilage—you’ll become a confident, informed pet parent. Ready to stock up on fresh, high-quality wet food for your feline friend? Explore Weruva’s selection of nutritious recipes like Steak Frites Recipe Plus and discover how easy it is to keep your cat happy and healthy.