If you want to make your cat fatter, protein and fat are not the most important thing, it's just the sheer amount of calories. There's nothing wrong with the food that you eat. There are probably cats eating the same exact food that are a healthy weight. Just feed him more.
Similarly to...
Hi, I recently bought a can of Fancy Feast Grilled Chicken and Cheese. I don't plan to use this as their full diet, just as a treat that my boys can have every once in a while. I read that some cats like it. I also read that many cats are lactose intolerant.
So should I feed this to my boys...
None of that is true.
The most dangerous thing happening from any kind of cat food (besides raw) is the cat choking on a piece of dry food. Cats literally evolved eating proteins from other animals, meaning ripping them up, chewing, and swallowing. If you are worried about it, which you...
Although New York is not all NYC, it is still expensive. At Petland Discounts, one FF can is 75 cents and a box of 24 is $16.32 (68 cents a can), and at Walmart, it's just 1 cent cheaper for an individual can, and they don't sell boxes. So Buying in bulk at Petland is cheaper for me.