Some other ways to tell are a noticeable sour or rotten smell, growth of mold or bugs, if the food has been exposed to moisture or humidity, or if your pet shows signs of discomfort or illness after eating the food. You must not serve any canned cat food that's past its expiry date, whether it's spoiled or not.
What happens if my cat eats old wet food?
Even if your cat prefers to eat their food in a few sittings, don't be tempted to leave wet food out all day, as this increases the risk of disease-causing bacteria developing. After a maximum of four hours, throw out the old food and wash the bowl properly with soap and water before refilling with fresh food.
Can wet cat food go bad?
Unopened wet cat food can last from four months to three years, but as soon as it is opened it should be sealed and kept in the fridge and used within five to seven days. It should only be kept out at room temperature (or in your pet's bowl) for four hours. Then it should be thrown out if uneaten.
What happens if my cat eats bad cat food?
If you suspect your cat has eaten something toxic, signs of poisoning can range from mild to severe. If your cat has ingested a toxin, you may see: GI issues like vomiting and diarrhea. Wheezing or difficulty breathing.
How long does wet cat food last once opened?
Your pet's bowl should be emptied of moist or canned food not eaten by your cat or dog within 4 hours if the ambient temperature is above 50°F. Opened cans should be stored in the fridge, at temperatures between 40-45°F, for a maximum of 5-7 days. Any cat or dog food remaining after that time should be thrown out.
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