Animal caught by doctor (male) (5)
I believe the answer is:
camel
'animal' is the definition.
(thesaurus)
'caught by doctor male' is the wordplay.
'caught' becomes 'c' (cricket abbreviation).
'by' is a charade indicator (letters next to each other).
'doctor' indicates an anagram.
'male' with letters rearranged gives 'amel'.
'c'+'amel'='CAMEL'
(Other definitions for camel that I've seen before include "Bearer of burdens" , "Desert ruminant" , "One travelling in caravan" , "African transport" , "It is called the ship of the desert" .)