Lion bite? Moggies love it! (6)
I believe the answer is:
catnip
'moggies love it' is the definition.
I can't judge whether this definition defines the answer.
'lion bite?' is the wordplay.
'lion' becomes 'cat' (lions are big cats).
'bite?' becomes 'nip' (nipping is a kind of biting).
'cat'+'nip'='CATNIP'
Can you help me to learn more?
(Other definitions for catnip that I've seen before include "Herb of the mint family, attractive to some pets" , "feline favourite?" , "Plant with scented leaves which felines like" , "Plant favoured by felines" , "Puss would like that" .)