That in a nutshell was the job of a ranger. But today's wildlife guides have had to evolve, not just gauge and monitor animals, but defend them with their lives.
Anti-poaching training and strategies have become the primary focus. Rangers evolved, were forced to become militarized. Working 24/7 to secure poaching hot-spots, do regular patrols to find and remove snares, gather intelligence, and set up ambushes to catch would-be poachers; all the while, keenly aware their lives are under threat.