Troubled sleep is over for bears (6)
I believe the answer is:
pandas
'bears' is the definition.
The answer and definition can be both animals as well as being plural nouns.
Maybe they are linked in a way I don't understand?
'troubled sleep is over' is the wordplay.
'troubled' becomes 'sad' (I can't justify this - if you can you should believe this answer much more).
'sleep' becomes 'nap' (a nap is a short sleep).
'is over' shows that the letters should be reversed in order.
'sad'+'nap'='sadnap'
'sadnap' backwards is 'PANDAS'.
'for' is the link.
Can you help me to learn more?
(Other definitions for pandas that I've seen before include "They eat bamboo leaves" , "Black and white bear-like animals" , "Endangered mammals" , "zoo favourites" , "Black-and-white mammals of bamboo forests" .)