Grief suffered with a fellow animal (7)
I believe the answer is:
giraffe
'animal' is the definition.
(I've seen this before)
'grief suffered with a fellow' is the wordplay.
'suffered with' is an anagram indicator (I've seen 'suffers' mean this).
'fellow' becomes 'f' (abbreviation - of a society etc.).
'a'+'f'='af'
'grief' with its letters mixed up with 'af' can make 'GIRAFFE'.
(Other definitions for giraffe that I've seen before include "Tall quadruped" , "Tallest land animal" , "Tallest beast" , "Tallest mammal" , "Long-necked animal" .)