Son photographs hares (7)

I believe the answer is:

sprints

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'hares' is the definition.
The answer and definition can be both to do with motion as well as being verbs in their -s form.
Maybe you can see a link between them that I can't see?

'son photographs' is the wordplay.
'son' becomes 's' (genealogical abbreviation for son).
'photographs' becomes 'prints' (I've seen this before).
's'+'prints'='SPRINTS'

Can you help me to learn more?

(Other definitions for sprints that I've seen before include "Darts" , "Dashes" , "careers" .)

I've seen this clue in The Telegraph.

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