When Humans Were Dinner.

In their new book Man the Hunted: Primates, Predators and Human Evolution, Donna Hart and Robert Sussman argue that early humans are often dinner for wild dogs and cats, hyenas, eagles, and crocodiles.

... the scientists analyzed primate fossils and determined that 9-10 percent show evidence of death from predation. This evidence includes teeth marks on bones, claw marks on skulls and, most dramatically, holes in an early human head into which sabertooth cat fangs fit.

Link