What milk contains the least amount of fat?

Processed refined pork fat, also known as lard, is 99% fat by volume, with the addition of stabilizing agents, and colorants.

There are other animal products that are similar, Schamaltz, which is a flavored spread composed of blended chicken fat.

Several diary items deserve mention such as certain cheeses, and heavy cream.

Nuts can contain extremely high fat content that is vegetable in nature.

Oils, such as palm kernel oil has an extreme fat content.

Pemmican, suet and other fat based high energy foods are at the high end of the fat scale.

Seal and or whale blubber.