Animal escaped in gorge (3,3)
I believe the answer is:
pig out
'gorge' is the definition.
(synonyms)
'animal escaped' is the wordplay.
'animal' becomes 'pig' (pigs are animals).
'escaped' becomes 'out' (I've seen this before).
'pig'+'out'='PIG OUT'
'in' is the link.
(Other definitions for pig out that I've seen before include "overindulge" , "gorge" , "feast" , "Eat too much food" , "go on a binge" .)