Expert in body of stories — first about cat (9)
I believe the answer is:
anatomist
'expert in body' is the definition.
'anatomist' can be an answer for 'expert' (anatomist is a kind of expert). I am not sure about the 'in body' bit.
'stories first about cat' is the wordplay.
'stories' becomes 'ana' (archaic term for anecdotes or gossip).
'first' becomes 'ist' (ist resembles 1st).
'about' means one lot of letters go next to another.
'cat' becomes 'tom' (a tom is a male cat).
'ist' put after 'tom' is 'tomist'.
'ana'+'tomist'='ANATOMIST'
'of' is the link.
Can you help me to learn more?
(Other definitions for anatomist that I've seen before include "Biological expert" , "One studying bodily structure" , "medical expert" , "Gray, for one" , "Body expert" .)