Nigel Kennedy doesn't really possess such an animal (3)
I believe the answer is:
elk
'animal' is the definition.
(I have seen 'American animal ' mean 'elk' so perhaps 'animal' could also mean 'elk')
'nigel kennedy doesn't really possess such' is the wordplay.
'ELK' is hidden in amongst the letters.
But, I am not sure how the hidden word is indicated.
'an' acts as a link.
Can you help me to learn more?
(Other definitions for elk that I've seen before include "Asian moose" , "Large northern deer" , "Largest living deer" , "Moose-like deer" , "Large ruminant" .)