Animal, clever, that may be tolerated (8)
I believe the answer is:
bearable
'animal clever that may be tolerated' is the definition.
Both the definition and answer are adjectives. Maybe you can see a link between them that I can't see?
'animal clever' is the wordplay.
'animal' becomes 'bear' (bear is a kind of animal).
'clever' becomes 'able' (able can mean skilled or talented).
'bear'+'able'='BEARABLE'
Can you help me to learn more?
(Other definitions for bearable that I've seen before include "accepted" , "just about OK" , "Able to be endured" , "Capable of being endured" , "sustainable" .)