Shy bear perhaps mistaken for another furry creature (5)
I believe the answer is:
coypu
'creature' is the definition.
(coypu is a kind of creature)
'shy bear perhaps mistaken for another furry' is the wordplay.
I cannot quite see how this works, but
'shy' could be 'coy' (coy can mean shy or modest) and 'coy' is located in the answer.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for coypu that I've seen before include "Beaver-like creature" , "South American beaver-like beast" , "South American rodent bred for its fur, nutria" , "Aquatic beaver-like rodent" , "S. American "beaver"" .)