Man-eating rat is awfully like an extinct marsupial (9,5)
I believe the answer is:
tasmanian tiger
'an extinct marsupial' is the definition.
'tasmanian tiger' can be an answer for 'marsupial' (Tasmanian tiger is an example). I'm unsure of the 'an extinct' bit.
'man-eating rat is awfully' is the wordplay.
'awfully' indicates anagramming the letters.
'man'+'eating'+'rat'+'is'='maneatingratis'
'maneatingratis' with letters rearranged gives 'TASMANIAN TIGER'.
'like' is the link.
Can you help me to learn more?
(Another definition for tasmanian tiger that I've seen is " Probably extinct doglike marsupial".)