Calf, quite possibly, in US state? (3,6)
I believe the answer is:
new jersey
This might be a double definition.
'calf' is the first definition.
(Jersey is a type of cow)
'quite possibly in us state?' is the second definition.
'New Jersey' can be an answer for 'state?' (New Jersey is an example). I am not sure about the 'quite possibly in us' bit.
Can you help me to learn more?
(Other definitions for new jersey that I've seen before include "The Garden State" , "US state; seasonal gift?" , "Newark's state" , "Wardrobe extension" , "calf?" .)