Sweet animals to look at (5-3)
I believe the answer is:
bulls-eye
'sweet' is the definition.
(I've seen this before)
'animals to look at' is the wordplay.
'animals' becomes 'bulls' (bull is a kind of animal).
'to look at' becomes 'eye' (I've seen this before).
'bulls'+'eye'='BULLS-EYE'
(Other definitions for bulls-eye that I've seen before include "Accurate shot" , "Target's centre" , "Dead centre - Bill Sikes's dog - sweet" , "Big, round, hard peppermint" , "Boiled sweet" .)