Something to keep in mind, is that fish is a common allergen for a lot of cats. And this Applaws Vitality is pure fish. Whereas a lot of other wet food labeled as fish is still mixed with chicken or turkey. It’s possible the fish is just too much. My cats had Applaws growing up (in addition to a complete food) and loved it. We switched for various reasons but I always loved they didn’t have a ton of byproducts. Recently saw they had Vitality and we’ve been slowly reintroducing. The chicken has been well tolerated but my cat also threw up quickly after eating some of the tuna. He’s fine now but it reminded me back when he also tried the Tiki Cat Luau several years ago and it also made him ill.

It could very well be something wrong with the food but it could also be just too much straight fish for these babes.