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Oil obtained from the body of an animal.

Can be divided into terrestrial warm-blooded animals and poultry fat, such as butter, sheep oil, lard, generally solid, its main components are palmitic acid, stearic acid triglyceride; Marine mammals and fish oils, such as whale oil, fish oil, etc., are generally liquid, the main components in addition to nutmeg acid, palmitic acid, stearic acid, oleic acid, there are 22~24 carbon and 4~6 double bond unsaturated acid and 10~14 carbon unsaturated acid.

Mainly for consumption, such as pork fat, beef fat, sheep fat, etc. Also widely used in the manufacture of hardening oil, soap, glycerin, lubricating oil and leather industry and drugs. Fish oil is a raw material for preparing coatings. By boiling it.

The fats and oils of land animals are mainly concentrated in adipose tissue and viscera, such as pig fat, cow fat, sheep fat, etc. There is also an emulsifying state in the milk of mammals, such as butter. There are also small amounts in the bone marrow, such as bone oil. The fatty acids comprising triglycerides are mainly oleic acid palmitic acid and stearic acid. It contains more saturated acids than vegetable oils. Most of the oils in fish are found in the liver, such as cod liver oil. Most of the oil of sea animals, such as dolphin oil, is found under the skin.