The buck stops here! (4)
I believe the answer is:
scut
This clue might be a double definition.
'the buck' is the first definition.
The answer and definition can be both animals as well as being singular nouns.
Perhaps they are linked in a way I don't understand?
'stops here' is the second definition.
Although both the answer and definition are singular nouns, I don't understand how they can define each other.
Can you help me to learn more?
(Other definitions for scut that I've seen before include "Reindeer tail" , "Cuts into a small tail" , "Short erect tail" , "Deer's tail" , "Small tail as of rabbit" .)