Speed is an asset for a predator. Except when that predator runs so fast that it essentially blinds itself.
The tiger beetle, relative to its size, is the fastest creature on Earth. Some of these half-inch-long beetles cover about 120 body lengths per second (at about five miles per hour). The fastest human can do about five body lengths. To take the sprinting gold from the tiger beetle, a person would have to hit 480 miles per hour.
BUT! The tiger beetle has a problem. At peak speeds, everything becomes a blur. They can't gather enough light with their eyes, and vision is compromised. It can still perceive the pursued but not at all clearly.
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