The end of dog exercises, no lead on Rottweiler (8)
I believe the answer is:
curtains
'the end' is the definition.
('curtains' can mean someone's end or demise)
'dog exercises no lead on rottweiler' is the wordplay.
I cannot quite see how this works, but
'dog' could be 'cur' (both can mean a despicable person) and 'cur' is located in the answer.
'no' could be 'n' (common abbreviation) and 'n' is found in the answer.
The remaining letters 'tais' is a valid word which might be clued in a way I don't see.
This may be the basis of the clue (or it may be nonsense).
'of' is the link.
Can you help me to learn more?
(Other definitions for curtains that I've seen before include "Window drapes in slangy ending" , "Draperies" , "Death (slang)" , "Window hangings" , "Hanging drapes" .)