Runs for animals (5)
I believe the answer is:
hares
I believe this is a double definition.
'runs' is the first definition.
(haring is a kind of running)
'for animals' is the second definition.
(I have seen 'Swift animals ' mean 'hares' so perhaps 'animals' could also mean 'hares')
(Other definitions for hares that I've seen before include "Rabbit-like creatures" , "Fleet-footed animals" , "Fast animals" , "Swift long-eared mammals" , "Long-eared animals" .)