Can't care about eating American lobster perhaps? (10)
I believe the answer is:
crustacean
'lobster perhaps?' is the definition.
(lobster is a kind of crustacean)
'can't care about eating american' is the wordplay.
'about' is an anagram indicator.
'eating' is an insertion indicator.
'american' becomes 'us'.
'cant'+'care'='cantcare'
'cantcare' with letters rearranged gives 'crtacean'.
'crtacean' enclosing 'us' is 'CRUSTACEAN'.
(Other definitions for crustacean that I've seen before include "crab, for example?" , "Hard-shelled arthropod" , "Perhaps crab" , "Woodlouse, say" , "Lobster perhaps" .)