Mass of a mature Holstein cow

Mass of a mature Holstein cow (680 kg)

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Neat Ratios ...

Mass of a mature Holstein cow (680 kg)

is 2.5 x Mass of heaviest weights lifted in Olympic Weightlifting (Clean and Jerk) (274 kg)...more
is 50 x Mass of a half-filled sandbag as used in flood control (13.6 kg)...more
is 500 x Mass of an average human brain (1.35 kg)...more

If this was a standard unit ...