A rabbit always needs something to chew on in order to wear down its teeth. Like most rodents, if a rabbit does not have something hard to chew on the teeth will continue to grow unchecked. Teeth that are too long can cause health problems. Chewing on food alone will not solve this problem.
In addition, rabbits can also become bored easily. Offering a selection of items to chew on can sometimes help to alleviate this feeling. Keeping a rabbit occupied is also an important way to keep a rabbit healthy.