There are a few things that might be good about giving cats raw salmon. First, it has a lot of protein, which helps build and keep healthy muscles. Cats need protein because they have to eat meat. Second, raw salmon is full of omega-3 fatty acids, especially EPA (eicosapentaenoic acid) and DHA (docosahexaenoic acid), which are good for a cat's skin and coat, lower inflammation, and help the brain work better.