Able to heal dog, indigenous breed, having removed lead (8)

I believe the answer is:
curative
'removed lead' is the definition.
The definition and answer can be both man-made objects as well as being singular nouns.
Maybe you can see a link between them that I can't see?
'able to heal dog indigenous breed' is the wordplay.
I cannot really see how this works, but
'dog' could be 'cur' (a cur is an aggressive or scruffy dog) and 'cur' is found in the answer.
This may be the basis of the clue (or it may be nonsense).
'having' acts as a link.
Can you help me to learn more?
(Other definitions for curative that I've seen before include "Medicine" , "Therapeutic" , "Healing" , "health-giving" , "Restoring to health" .)
