A grain sensitivity and a fish preference often arrive in the same dog, and the reason to build a recipe around fish specifically rather than simply removing grain from a chicken formula is that it takes a second common trigger off the table at the same time.

Fish meal makes up 28% of this recipe, chosen partly as a natural source of omega-3, alongside dried sweet potatoes and potatoes rather than cereal for the carbohydrate. Pork fat is also included, so this is not a single-protein food despite fish being the named headline ingredient — worth knowing if pork is a protein you're specifically trying to avoid.

• Grain-free: fish meal 28%, dried sweet potatoes 20%, no wheat or maize
• Also contains pork fat, despite fish being the named ingredient
• Protein 25%, fat content 13%, omega-6 3%, omega-3 0.6%
• Calcium 1%, phosphorus 0.8%
• Available in kibble sizes for large, small and small/medium breed adult dogs
• Made in a factory that also handles grains

One thing worth knowing. If you're avoiding pork specifically, this recipe isn't for you — pork fat sits alongside the named fish in the composition. Eukanuba also note the product is made in a factory that handles grains, so it isn't guaranteed free of any trace cross-contact even though the recipe itself is grain-free.

Who it's for: owners of an adult dog avoiding grain and wanting fish as the primary protein, provided pork isn't also a protein to avoid.