Where can you keep your rabbit overnight in winter without a cage is a cat carrier ok?

Answer 1

A cat carrier is too small to keep a rabbit in for anything other than short-term transportation (like to and from the vet's). A cat carrier is definitely too small for the rabbit to stay in overnight. If you don't have a cage for your rabbit, consider "bunny-proofing" a room where the rabbit can stay (or even a large closet, so long as there's air flow), or closing off a section of a room or a hallway with baby gates. A dog crate could also work. Wherever you put the rabbit, it should be safe; she should have unlimited access to hay and water; and enough room to stand up her full height, stretch out her full length, and hop a few paces at least. See the related questions below for more info and helpful links.