Antelope born right at the end of season (9)
I believe the answer is:
springbok
'antelope' is the definition.
(springbok is a kind of antelope)
'born right at the end of season' is the wordplay.
'born' becomes 'b' (common abbreviation).
'right' becomes 'ok' (both are affirmative answers).
'at the end of' means one lot of letters go next to another.
'season' becomes 'spring' (spring is a season).
'b'+'ok'='bok'
'bok' put after 'spring' is 'SPRINGBOK'.
(Other definitions for springbok that I've seen before include "jumper" , "Sportsman" , "South African symbol" , "Antelope" , "antelopes" .)