Iams ProActive Health Adult uses farm chicken as its first ingredient, aimed at everyday immunity and digestion on a value track. Pro Plan Adult Salmon uses salmon as the main protein, emphasising skin, coat and digestion, and is a widely stocked imported option.

Iams suits budget-conscious indoor cats on a chicken base. Pro Plan salmon suits fish-preferring cats and owners watching coat condition, since fish oil fatty acids help the skin, but cats sensitive to fish protein should avoid it.

Chicken and salmon are different protein routes: Iams is friendlier on price, Pro Plan salmon carries a higher reference price. Fish food smells stronger and oxidises after opening, so storage matters more. Iams is a plain formula with limited appeal for high-meat goals.

Check the cat's acceptance of fish versus chicken, then compare monthly cost at the real portion. If the coat looks dull, rule out skin disease and parasites before changing to a fish recipe. Persistent skin issues need a vet, not just a new food.