Stray dogs in the gallery (4)
I believe the answer is:
gods
'gallery' is the definition.
(I've seen this in other clues)
'stray dogs' is the wordplay.
'stray' is an anagram indicator.
'dogs' anagrammed gives 'GODS'.
'in the' acts as a link.
(Other definitions for gods that I've seen before include "Supernatural beings" , "Superhuman beings" , "objects of worship" , "Gallery of a theatre" , "Deities" .)