Since canned cat food contains meat, I would not want to leave it out any longer than I would be comfortable leaving meat out that I eat. So, I would not suggest leaving it out uncovered for very long. Usually half an hour at the most. It is best to put out enough food that the cat can eat in one sitting and have none left over.
An open can of cat food is typically good for about 3-4 days in the refrigerator before it needs to be discarded.
I hope you mean freezer and yes as long as it's bagged and frozen you won't contaminate your food
the cat will die. but it depends on how long you keep the cat in the fridge.
he is always hungryThis is very common. I myself have a cat and observe this behavior quite frequently.Your cat will do that if there is a mouse or other animal hiding under there.Also, the refrigerator blows warm air, so during the winter your cat might sit in front of there to stay warm.The last reason is that your cat might sense the food in the refrigerator, and (whether it is fed or not) will sit in front of the fridge and stare in hopes that there IS food in there.
predator?
If it is wet cat food, then it will last for around three hours at the most, although personally wet cat food should not really be left out that long. Dry food can be left out most of the day, but even this can become stale if left out too long. It is always best to throw away old kibble and replace with fresh every day.
In nature, cats usually eat their food at at least room temperature, and often (in the case of freshly killed prey) slightly above room temperature. For them to eat food that's actually cold is unnatural.
Put dry cat food in a bowl and let them eat. They will not overeat. Then, around 6:00 or so, put wet (canned) cat food out. Change or refill the bowl with food about twice a week. You can trust me. I've been a cat owner for 9 proud years.
A cat that isn't nursing can last however a nursing kitten can't..nursing kittens require milk to survive every two hours day and night until they can be weaned onto dry cat food
it is OK for a cat to eat cat food but in a long time the cat can have problems like blind and alot
dish of cat food
Depends on the type of ferret food as all have different ingredients. as long as the food meets your cat's nutritional needs.