Both of them are definitely on the island. I know for a fact they are on the south end of the island at Topsail Beach because I have seen them near Catherine Avenue in the live oak forest at night. You don't see many stray cats near the south end of the island and coyotes and foxes are responsible. You can look it up on google about rabid foxes on North Topsail Beach.

Bottom line they are both found on the Topsail Beach.