American hare finally caught by sailor and religious leader (4,6)
I believe the answer is:
jack rabbit
'american hare' is the definition.
(type of hare native to North America)
'finally caught by sailor and religious leader' is the wordplay.
'finally' suggests the final letters.
'by' is a charade indicator (letters next to each other).
'sailor' becomes 'jack' (informal term for a sailor).
'and' means one lot of letters go next to another.
'religious leader' becomes 'rabbi' (Jewish religious leader).
The final letter of 'caught' is 't'.
'jack'+'rabbi'='jackrabbi'
't' put after 'jackrabbi' is 'JACK RABBIT'.
(Other definitions for jack rabbit that I've seen before include "Hare" , "sprightly creature" , "fast buck?" .)