A category of stance which physically distinguishable by a 10%-90% weight distribution, one and one half length of one's own foot for an alignment of depth, and the rear foot positioned flat on the ground - eyes directed toward the Point of Reference.

Comments:

Cat stances are typically transitory.

Cat stances always have the front foot in a constant state of readiness.

The standard width of a cat stance is Toe-Heel Alignment.  But, width is not always used as a physical determinant in cat stances.

Derivation:

The term cat is taken from the kung-fu (gung-fu) animal styles, which imitated different animals.  In this case, the cat stance resembles a cat ready to pounce.