The average rat can:

• wriggle through a hole no larger than the diameter of a quarter
• scale a brick wall as if it had rungs
• gnaw through lead pipes and cinder blocks with chisel teeth that exert 24,000 pounds per square inch
• survive being flushed down a toilet and enter buildings by the same route
• multiply so rapidly that a pair could have 15,000 descendants in one year’s time
• plummet five stories to the ground and scurry off unharmed

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