Which animal has the shortest lifespan?
by 
Daydreamer
ANSWERS: 6
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The gastrotrich (a minute aquatic animal) lives the shortest--as short as a three days.
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Depends on whether you consider bacteria to be "animals". If you do, then you will have to consider a wide variety of bacterial species with a life cycle of 15-20 minutes. If you don't, then a case can alternatively be made for the male of the mite Acarophenax tribolii -- which develops inside the body of its mother, fertilises its female siblings, and then dies before it is even born, all within the space of a couple of hours.
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example of any animal which can be seen out of the microsope ?
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Micro organisms does have the shortest lifespan than in animal kingdom. But when you're talking about animals. There is one insect called 'Mayfly'. It's lifespan is only ONE day.
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Animals? The chipmunk only lives 3-5 years. A guinea pig maybe 6-10.
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Insects have very short lifespans too, Adult mayflies, depending on the species, have life spans ranging from half an hour to a whole day!
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