"All animals grapple -
well all predators. Tigers, Lions, Wolves all will grab hold of prey and bring it down to the ground to finish it off. Prey will lash out with it's hooves; but
predators will grab on. Rule of thumb - Prey strikes - Predators grapple. There- that should end the wrestler vs striker debate once and for all."
Got this from Michael E. Reilly's web site. Food for thought.