Reprimand an animal for upsetting the seat (8)
I believe the answer is:
lambaste
'reprimand' is the definition.
(I know that bawl out can be written as lambaste)
'an animal for upsetting the seat' is the wordplay.
'an animal' becomes 'lamb' (lamb is a kind of animal).
'for' means one lot of letters go next to another.
'upsetting' indicates an anagram.
'seat' with letters rearranged gives 'aste'.
'lamb'+'aste'='LAMBASTE'
(Other definitions for lambaste that I've seen before include "Severely criticise" , "Roast" , "pan" , "carpet" , "Berate severely" .)