Reptile makes unusual present (7)
I believe the answer is:
serpent
'reptile' is the definition.
(serpent is a kind of reptile)
'unusual present' is the wordplay.
'unusual' is an anagram indicator.
'present' anagrammed gives 'SERPENT'.
'makes' acts as a link.
(Other definitions for serpent that I've seen before include "Tempting" , "Instrument of the past" , "Eve's tempter" , "Present for a snake" , "Large snake, dragon" .)