Sort of clip found at the end of a lead (7)
I believe the answer is:
bulldog
I believe this clue is a double definition.
'sort of clip' is the first definition.
(I've seen this before)
'found at the end of a lead' is the second definition.
(I've seen this before)
(Other definitions for bulldog that I've seen before include "Sturdy animal" , "friend" , "Kind of clip" , "Animal symbolising Britain" , "Tenacious type" .)