Milk is obtained from milking animals (e.g., cows, sheep, goats, buffalo). Milk is usually heat-treated by pasteurization, ultra-high temperature (UHT) treatment or sterilization.

It includes skim, part-skim, low-fat and whole milk.

See also:
"Milk" is in the NAICS Code "112120"
  (Dairy Cattle and Milk ProductionDairy cattle farming)

"Milk" is in the CPC Code "2291"
  Milk and cream in solid forms