Appetiser in tin given to animal (6)
I believe the answer is:
canape
'appetiser' is the definition.
(I've seen this before)
'tin given to animal' is the wordplay.
'tin' becomes 'can' ('can' can be a synonym of 'tin').
'given to' says to put letters next to each other.
'animal' becomes 'ape' (ape is a kind of animal**).
'can'+'ape'='CANAPE'
'in' is the link.
(Other definitions for canape that I've seen before include "Small thing to eat with a drink" , "Hors d'oeuvre" , "Savoury nibble offered at posh parties" , "Small appetiser" , "Light refreshment" .)