What he means when he say "There is no greater bore than perction" is because after a while animals become predictable they run. and leave tracks they don't have the smart to try and out smart you. while a human like Rainsford, he was able to use is knowledge of hunting to trick the general like the tiger pit a animal could not do such a thing and in the end he made the general think he was dead came to his house and killed him.
