Berries on willow for animal (5,3)
I believe the answer is:
fruit bat
'animal' is the definition.
(fruit bat is a kind of animal)
'berries on willow' is the wordplay.
'berries on' becomes 'fruit' (I can't explain this - if you can you should give a lot more credence to this answer).
'willow' becomes 'bat' (willow can mean a cricket bat).
'fruit'+'bat'='FRUIT-BAT'
'for' acts as a link.
Can you help me to learn more?
(Other definitions for fruit bat that I've seen before include "Large flying mammal" , "Long-snouted, large-eyed nectar feeder" , "Flying fox, for example" , "Flying fox; bait turf (anag.)" .)