Snake in Canada: no, that's wrong (8)
I believe the answer is:
anaconda
'snake' is the definition.
(anaconda is a kind of snake)
'canada no that's wrong' is the wordplay.
'that's wrong' indicates an anagram.
'canada'+'no'='canadano'
'canadano' is an anagram of 'ANACONDA'.
'in' acts as a link.
(Other definitions for anaconda that I've seen before include "Large boa of South America" , "South American python" , "Semi-aquatic boa" , "Large semiaquatic snake" , "Large water snake" .)