Different milks carry different amounts of fat depending on the animal's needs for its young. Buffalo milk is the richest of the common dairy milks, usually around 6 to 8 percent fat, well above cow milk, which sits around 3.5 to 4.5 percent. Goat milk is close to cow milk but slightly lower, camel milk is leaner still at roughly 2.5 to 3 percent, and human milk generally has the least total solids of the group. Lining these up from highest to lowest fat content gives buffalo, cow, goat, camel, human.