Plantagenet king inside unleashed war dogs (6)
I believe the answer is:
edward
'plantagenet king' is the definition.
'edward' can be an answer for 'king' (I've seen this before). I'm not certain of the 'plantagenet' bit.
'inside unleashed war dogs' is the wordplay.
'inside' indicates the answer is hidden within the clue.
'EDWARD' is hidden within 'unleashed war dogs'.
Can you help me to learn more?
(Other definitions for edward that I've seen before include "Former King" , "Lear, Elgar or Fox" , "Name of eight kings" , "-- Scissorhands" , "Regnal name of six kings of England" .)