See law broken by beast (6)
I believe the answer is:
weasel
'beast' is the definition.
The answer and definition can be both animals as well as being singular nouns.
Perhaps they are linked in a way I don't understand?
'see law broken' is the wordplay.
'broken' indicates anagramming the letters.
'see'+'law'='seelaw'
'seelaw' with letters rearranged gives 'WEASEL'.
'by' acts as a link.
Can you help me to learn more?
(Other definitions for weasel that I've seen before include "Stoat-like mammal - treacherous type" , "Boggle" , "One deceiving" , "Predator" , "Musteline animal" .)