Smaller creatures experience time much faster than we do, so to them we seem to be moving in slow motion.

Interesting fact of the day about animals: 

Smaller creatures experience time much faster than we do, so to them we seem to be moving in slow motion. 

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This means that they can observe movement on a finer timescale than bigger creatures, allowing them to escape from larger predators.

Insects and small birds, for example, can see more information in one second than a larger animal such as an elephant.

The ability to perceive time on very small scales may be the difference between life and death for fast-moving organisms such as predators and their prey

said lead author Kevin Healy, at Trinity College Dublin (TCD), Ireland.

The reverse was found in bigger animals, which may miss things that smaller creatures can rapidly spot.