Being able to make old fur new is marvellous! (9)
I believe the answer is:
wonderful
'marvellous' is the definition.
(I know that marvellous can be written as wonderful)
'being able to make old fur new' is the wordplay.
'old fur new' can be anagrammed to 'WONDERFUL'.
Though, I am not clear how the anagram is indicated.
'is' acts as a link.
Can you help me to learn more?
(Other definitions for wonderful that I've seen before include "Marvellous" , "Awe-inspiring" , "Remarkably good" , "Extraordinary" , "Fantastic, terrific" .)