Success rate is important in play. A cat that catches its prey every time soon gets bored, and a cat that never gets it just loses interest. The ideal hunting success rate is around 1 in 3 to 1 in 6. Capturing prey at this rate generally maximises a cat's interest in the game.
Famous quotes containing the words rate and/or success:
“At this very moment,... the most frightful horrors are taking place in every corner of the world. People are being crushed, slashed, disembowelled, mangled; their dead bodies rot and their eyes decay with the rest. Screams of pain and fear go pulsing through the air at the rate of eleven hundred feet per second. After travelling for three seconds they are perfectly inaudible. These are distressing facts; but do we enjoy life any the less because of them? Most certainly we do not.”
—Aldous Huxley (18941963)
“Success is somebody elses failure. Success is the American Dream we can keep dreaming because most people in most places, including thirty million of ourselves, live wide awake in the terrible reality of poverty.”
—Ursula K. Le Guin (b. 1929)