I recently adopted two dwarf bunnies (10 days ago) and they have not chewed on anything. I do not know their age but they are likely about a year old. They seem very comfortable in their room and not too scared to come out and play. I have plenty of different wood/straw toys and apple sticks and cardboard things. I spent a fortune on a wide variety of toys lol... I had bunnies as a child and remember them destroying toys in a matter of a day so I am surprised by this. They are eating hay and their veggies normally though so is there any reason to be worried? Thanks!!