Money for an animal (5)
I believe the answer is:
rhino
This clue is a double definition.
'money' is the first definition.
(old-fashioned slang term for money)
'for an animal' is the second definition.
(short for rhinoceros)
(Other definitions for rhino that I've seen before include "Large African pachyderm" , "Hi, Ron, this animal is abbreviated" , "old-fashioned bread" , "Horny creature" , "one might charge in Africa" .)