How do you measure the circumference of a horse?

How do you measure the circumference of a horse?
How do you measure the circumference of a horse?

First assume the horse is a perfect sphere…. But seriously, if you mean the girth, that is measured with a tape measure “just behind the slope of the withers,” according to the Leatherdale Equine Center at UMinnesota. See (bit.ly/HorseySize) for more detail, and measuring neck circumference, etc.