For a cat I would use centimeters.
cm
The metric unit commonly used to measure height is the meter. So, you would measure the height of Big Ben in meters.
millimetres (centimetres could also be used)
You would use meters.
meters
Centimeters would do it. A doorknob should be 91 centimeters (3 feet) above the floor.
To measure the height of your school, you would typically use meters, as it is the standard unit of measurement for height in the metric system. For smaller measurements, centimeters could also be used, but meters would provide a clearer understanding of the overall height.
Metres (American spelling = meters), unit symbol "m", would be the most appropriate metric unit to measure the height of a 32-story building.
The 'meter' is the metric unit of any length or distance, no matter what direction.
You can use centimeter or meter as a unit of a person's height.
depending on the reasons for measuring, centimetres (gerenal) or millimetres (scientific)
Centimetres