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Why is a fly so hard to catch?
The smaller an animal is, and the faster its metabolic rate, the slower time passes for it, scientists found.
This means that across a wide range of species, time perception is directly related to size, with animals smaller than us seeing the world in slow motion.
The findings, published in the journal Animal Behaviour, come from research into the ability of animals to detect separate flashes of fast-flickering light.
"Critical flicker fusion frequency" - the point at which the flashes seem to merge together, so that a light source appears constant - provides an indication of time perception.
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