Creature is around, is around and is around no more? (8)
I believe the answer is:
dinosaur
'creature' is the definition.
(dinosaur is a kind of creature)
'around is around and is around no more?' is the wordplay.
'around' indicates anagramming the letters.
'is around' becomes 'o' (I've seen this in other clues).
'around no more?' becomes 'ur' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'o'+'and'+'is'='oandis'
'oandis' with letters rearranged gives 'dinosa'.
'dinosa'+'ur'='DINOSAUR'
'is' is the link.
(Other definitions for dinosaur that I've seen before include "Large extinct reptile" , "Old-fashioned type" , "Beast long gone" , "Eg, triceratops" , "Extinct monster like Barney, children's TV pal" .)