Deliberate damage making a beast go astray (8)
I believe the answer is:
sabotage
'deliberate damage' is the definition.
(I've seen this before)
'a beast go astray' is the wordplay.
'astray' indicates anagramming the letters.
'a'+'beast'+'go'='abeastgo'
'abeastgo' is an anagram of 'SABOTAGE'.
'making' is the link.
(Other definitions for sabotage that I've seen before include "cripple" , "Treachery!" , "Got a base (anag.)" , "malicious damage" , "(E.g. factory) wrecking" .)