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" .)

I've seen this clue in The Irish Independent and The Guardian.

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