Put up with an animal (4)
I believe the answer is:
bear
I believe this clue is a double definition.
'put up with' is the first definition.
(synonyms)
'an animal' is the second definition.
(I know that Bear is a human)
(Other definitions for bear that I've seen before include "Carry - teddy" , "Huge carnivore" , "It could be polar or grizzly" , "Abide; support" , "eg Pooh" .)