Our rabbit savvy vet recently told us about a rabbit who had to be put to sleep after ingesting linoleum. We had a Flemmie who hated walking on linoleum and we were using it for his cage floor. He was kind enough to just chew holes and leave the linoleum leaving in a nice pile in the hole. However, we became concerned he might try to eat it, so we replaced the floor with plywood covered in stick on tiles. We had him in a North States Play Yard as a cage, and we just made the floor larger than the cage, so that he couldn't get to any of the edges of either the tiles or plywood. As long as they didn't get too wet (which would just cause them to come loose), he did fine with it. Definitely consider changing the flooring for the bunny's safety.