Fact number one: Rats can survive longer without a drink of water than a camel! Fact number two: Rats can tread water for three days and even survive being flushed down a toilet Fact number three: A female rat can produce as many as 2,000 offspring in a year! Fact number four: Rats use their tail to balance, communicate and regulate temperature. Fact number five: Some rats can survive high doses of radiation!