Rodent put in fridge breaks porcelain (10)
I believe the answer is:
chinchilla
'rodent' is the definition.
(chinchilla is a kind of rodent)
'put in fridge breaks porcelain' is the wordplay.
'put' means one lot of letters goes inside another.
'in fridge breaks' becomes 'chill' (I can't explain this - if you can you should believe this answer much more).
'porcelain' becomes 'china' (china is a kind of porcelain).
'chill' placed inside 'china' is 'CHINCHILLA'.
Can you help me to learn more?
(Other definitions for chinchilla that I've seen before include "furry creature" , "Rabbit" , "(Fur of) a small South American rodent" , "Soft grey fur" , "little furry animal" .)