One of the brands of dog food produced by Masterfoods is called "Perfect Fit", a brand found only in Japan.

The reason why it's called "Perfect Fit" is because its formulated for a specific breed of dog, and even broken down further into specific age groups.

Pictured here is the variety for Miniature Dachshunds, aged 7 years and up. There's a separate product for Miniature Dachshunds below 7 years.

Perfect Fit is available for six small dog breeds in all, Miniature Dachshund, Shih Tzu, Chihuahua, Welsh Corgi Pembroke, Toy poodle and Papillon. Each breed has two varieties, the basic variety and the elderly variety.

Perfect Fit is targeted to owners of show dogs, and is designed to promote the features and qualities specific to each breed.