The color can be a dark brown with some lighter brown colors, referred to as 'liver' (incorrectly as 'chocolate' or 'chestnut'), black (although any area of black is cause for disqualification in American Kennel Club-sanctioned shows), white, liver roan, or liver and white. As the GSP is a medium/large, active breed, the dogs can require considerable food. Older or less active GSPs can also become obese if fed more than suitable for the individual's activity levels. A healthy weight should permit the last two ribs to be felt under the coat and the dog should have a distinct waist or 'tuck-up'.