Since its possible for someone to train to poke there fingers through coconuts there should be no reason why they couldnt penetrate a vunerable skin spot of a large mammal.
Me thinks the last one finger zen master died a few years back, but maybe the two finger zen masters could do it to.
But humans evolved a different way of killing its pray firstly teamwork, secondly weapons, thirdly runing the animal down do to our stamina usually besting any animal.
Edited by frako, : No reason given.