Thiamine - another possible pet food deficiency.
When your cat quits a food, think about a real reason. Salmonella, etc. They can recognize the smell of something that's making them sick, even if you can't tell they're sick. Cats are so good at hiding it.
I suggest people Read other people's posts about vomiting with Taste of the Wild. My mom just got her cats back to healthy again, from earlier this year. Not only were they vomiting, they were crying like in pain at random times. 4 ILL CATS and total confusion. And, one of them stopped...