Share out animals (5)
I believe the answer is:
hares
'animals' is the definition.
(I have seen 'Swift animals ' mean 'hares' so perhaps 'animals' could also mean 'hares')
'share out' is the wordplay.
'out' is an anagram indicator (out can mean wrong or inaccurate).
'share' with letters rearranged gives 'HARES'.
(Other definitions for hares that I've seen before include "Rabbit-like creatures" , "Fast-running animals" , "Shares out the swift little animals" , "Fast animals" , "Share of wild animals" .)