Mad Jack Russells Dogs

I have a Jack Russell incredible, he is almost 10 years and was rescued when he was 2. We bought dry food from whole foods (with a lot of vegetables and cereals), she adores. Now, wet food is another story. I tried a few brands, but the stomach is very sensitive and the last two nights have been throwing everything right back up! Come have a health check, so I know there’s nothing wrong with him, I just want to know what other cat owners and their food whether a mark may be milder wet food that we can give. thank you! wow these answers are very useful, so take This really does not need wet food? Maybe I’ll make chicken and rice (very sweet), but he likes chicken, and it would be easier on the stomach. thank you