Snake caught by wild boar (5)
I believe the answer is:
cobra
'snake' is the definition.
(I know that cobra is a type of elapid)
'caught by wild boar' is the wordplay.
'caught' becomes 'c' (cricket abbreviation).
'by' says to put letters next to each other.
'wild' is an anagram indicator.
'boar' anagrammed gives 'obra'.
'c'+'obra'='COBRA'
(Other definitions for cobra that I've seen before include "One with hood" , "Deadly snake called King" , "one leading charmed life?" , "venomous type" , "Venomous Asiatic and African elapid snake" .)