Can't praise naughty pet (7,3)
I believe the answer is:
persian cat
'pet' is the definition.
(I have seen 'Hairy pet' mean 'persian cat' so perhaps 'pet' could also mean 'persian cat')
'can't praise naughty' is the wordplay.
'naughty' indicates an anagram.
'cant'+'praise'='cantpraise'
'cantpraise' anagrammed gives 'PERSIAN CAT'.
(Other definitions for persian cat that I've seen before include "domestic pet" , "Hairy pet" , "beast" , "animal" .)