Tolerate an animal (4)
I believe the answer is:
bear
I believe this is a double definition.
'tolerate' is the first definition.
(synonyms)
'an animal' is the second definition.
(I know that bear is a type of animal)
(Other definitions for bear that I've seen before include "Give birth to - large mammal" , "Press (on) - approach threateningly" , "Large, shaggy-coated mammal" , "Ursine - carry" , "One's hairy" .)