Whale skin i heard
Personally i think animals are able to survive on many foods, the problem we currently have access to too much of everything
Could be the skin, but I thought twas the blubber.
Either way, the Inuit don’t have much of a use for these:
Also, pesonally, I wouldn’t look to other species, such as big cats.
Their bodies do all sorts of different things from us, such as generate their own Vits, while us monkeys cant and so have to absorp them from food.
AFAIK.
As for access.
for us in the west, its certainly too abundant, readily available and often sexed up with sugar, if applicable.