What physical characteristic indicates a Corgi is maintaining an ideal weight according to owner-applied metrics?

Answer

Being able to easily feel their ribs and having a visible tuck behind the rib cage

A healthy weight is indicated when ribs can be easily felt by running hands along the side, and there is a visible tuck or 'waist' in the loin area behind the rib cage.

What physical characteristic indicates a Corgi is maintaining an ideal weight according to owner-applied metrics?
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