As for cats, just slide them a can of tuna or sardines. They will be happier for it. Or they can go outside and catch a bird to eat.
I don’t have a cat — not home enough to admire and serve one — but I often shop for cat lovers. The pet food aisle is often more than half empty of canned cat food.
And even when it’s not, the fare is not what I’d like if I were a cat. Too much “pate,” as if cats prefer paste or they need to gum their food. The cans are so small and the prices so high. Many labels boast gravy (water). There’s plenty of canned cat food with rice added. And absolutely no cat food with mouse meat.
The dried food is cheap and is basically vitamin cookies.
A can of tuna in the people aisle isn’t cheap but at least you know it’s 100 percent cat food and a bit on the chewy side.
If this is the extent of your knowledge about what constitutes an adequate diet for cats, then please don't demonstrate your ignorance by posting drivel like this. A diet of [mercury containing] tuna or sardines does not contain certain vitamins and other nutrients essential for cats' health. And I'm sure that people who put out feeders to attract birds for them to watch would really appreciate everyone's cat turned loose to forage for its own food. Cat lovers would surely appreciate the fleas and other vermin brought back into the house and their cat exposed to diseases, cars, and internal parasites.
Ours have a well rounded diet. They eat processed cat food, the juice drained from tuna cans, nibbles from our plates and wiggly critters from outside.