Life Expectancy
House mice usually live under a year in the wild, due to a high level of predation and exposure to harsh environments. In protected environments, however, they often live two to three years. The Methuselah Mouse Prize is a competition to breed or engineer extremely long-lived laboratory mice. As of 2005, the record holder was a genetically engineered mouse that lived for 1819 days (nearly five years). Another record holder that was kept in a stimulating environment but did not receive any genetic, pharmacological, or dietary treatment lived for 1551 days (over four years).
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Famous quotes containing the words life and/or expectancy:
“Why not make an end of it all?... My life is a succession of griefs and bitter feelings.... What is death?... A very small matter, when all is said; only a fool would be concerned about it.”
—Stendhal [Marie Henri Beyle] (1783–1842)
“If I had my life over again I should form the habit of nightly composing myself to thoughts of death. I would practise, as it were, the remembrance of death. There is no other practice which so intensifies life. Death, when it approaches, ought not to take one by surprise. It should be part of the full expectancy of life. Without an ever- present sense of death life is insipid. You might as well live on the whites of eggs.”
—Muriel Spark (b. 1918)