From your friendly Wikipedia:
Cow's milk is generally available in
several varieties. In some countries these are:
Full cream (or "whole" in US and UK, "homo milk" in Canada &
some US dairies, about 3.25% fat)
Semi-skimmed ("reduced fat" or "low fat", about 1.5-1.8% fat)
Skimmed (about 0.1% fat)
Milk in the U.S. and Canada is sold as:
Whole varieties
2% (reduced fat)
1% (low fat)
Skim (nearly no fat)
I think full cream milk is usually consumed by kids and skinny
people.