Crocodile oil is extracted from the fatty tissues

Fat

Fats consist of a wide group of compounds that are generally soluble in organic solvents and generally insoluble in water. Chemically, fats are triglycerides, triesters of glycerol and any of several fatty acids. Fats may be either solid or liquid at room temperature, depending on their structure...

of crocodiles and has been used both as preventative and a treatment for a number of human ailments and conditions for many years and across numerous cultures, including Ancient Egypt. It is somewhat red in color, and less viscous than alligator oil. Both were used in the tanning industry.