Dog needing a cure for a lost tail? (3)
I believe the answer is:
cur
'dog' is the definition.
(a cur is an aggressive or scruffy dog)
I cannot understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for cur that I've seen before include "Mongrel - coward" , "Scoundrel; mongrel dog" , "Wretch" , "Mongrel; rascal" , "Base fellow" .)