>Traditional people would often walk away from animals that didn't have
> >enough fat. Inuit would eat about 50/50 fat/protein to prevent this.
>
> I assume you're right Sean.
>
> Fredrik

Too much responsibility Frederick :-) so I have chased up the references.

Tindale (1972:248) speaking of desert Aborigines states:
When (kangaroo or euro are) killed they immediately feel the body for
evidence of the presence of caul fat.  If the animal is 'njuka,' or fatless,
it is usually left unless they are themselves starving.
Tindale, Norman B.
1972 The Pitjandjara. In Hunters and Gatherers today, edited by M.G.
Bicchieri. Holt, Rinehart and Winston.

Speth, J.D.
1987 Early hominid subsistence strategies in seasonal habitats. Journal of
Archaeological Science 14:13-29.
Speth, John D.
1989 Early hominid hunting and scavenging: the role of meat as an energy
source. Journal of human evolution 18:329-343.
Speth, J.K , and K.R. Spielmann
1983 Energy source, protein metabolism, and hunter-gatherer subsistence
strategies. Journal of Anthropological Archaeology 2:1-31.