[gnarledmaw]

"Hunting" probably didnt have anything to do with it. The ability to digest likely developed much earlier in the primate tree than the proto-chimp that is suggested.

Crab Eating Macaques

Diet: Crab eating macaques have the habit of inserting their hand in small burrows or holes to find crabs or other animals. In the mangrove swamp they have learned to feed on crabs, crustaceans, shellfish and other small animals exposed by the low tide.

[MacDorcha]

That explains our use for K-9s and our apparent build for sucking the marrow out of bones. How does this explain a habit of red meats?