Hello stranger !
I do not know anything about Cats. If the Cat is an adult then finding out (from the Rescue) if they have any details about his previous home environment may be useful. If the Cat is an established 'hunter' getting him/her to 'ignore' the Rabbits could be a challenge I would think. I will leave it to those on here with Cat experience to offer advice. In the meantime I would not allow any possibility of direct contact between the Cat and your Rabbits
Good luck x
Bookmarks