Mass is uniformly distributed about its center of mass.

a ninja hamster

Not directly ... it's the distribution of the mass that plays with balance.

The center of mass is a geometrical measurement not considering the weight distribution. The center of gravity is one location on a particular mass structure where the distribution of weight is the same no matter the direction of the measurement as it pertains to that one particular mass structure.

The need for mass production and distribution of goods during the Civil War