Conflict: “It came on great oiled, resilient, striding legs…. Each lower leg was a piston, a thousand pounds of white bone, sunk in thick ropes of muscle, sheathed over in a gleam of pebbled skin like the mail of a terrible warrior...."It can't be killed,"...."We were fools to come. This is impossible," (Bradbury 5-6).
The most obvious form of conflict in the short story is that between the hunters and the T-Rex. Behind that main conflict, we also sense a bit of Eckels’ internal conflict about even attempting to kill the beast. He immediately deems it impossible, and insists that they (the hunters) were fools to even think it was possible to succeed in killing the T-rex.