1. Ribs under your fingertips
Sharp, no padding
Easy to feel, thin padding
Hard to feel, thick padding
Can't feel them
2. Waist, looking down from above
Very deep pinch
Clear waist
Barely a waist
No waist, wider middle
3. Belly, looking from the side
Sharply tucked up
Gently tucked up
Flat or slightly rounded
Round or hanging low
A rough home check, not a diagnosis. Your vet can give an exact score and a target weight.