Ivy is a plant that grows all across western, central and southern Europe, Macaronesia, northwestern Africa and across central-southern Asia east to Japan and Taiwan. It is called hedera and is a genus of 12-15 species of evergreen clinking or ground creeping woody plants.
source wikipedia
So can rabbits eat ivy at all
Unfortunately they can’t eat it at all. It is extremely Poisonous for rabbits and is best avoided.