A Cohesion of Sheep

A cohesion of sheep! Perhaps not a practical term to use to describe farm animals (I feel like "cohesion" would be too much of a scientific term to use regarding sheep) but an accurate description, nonetheless. After all, the property of cohesion is defined as the ability of polar molecules to "stick" to other polar molecules - and cohesive groups of people are those who stick together.

Therefor, a flock of sheep should be a cohesion of sheep.