A normal, healthy rabbit will not need baths -- they are a lot like cats and spend a lot of time grooming themselves. However, if they are ill, overweight, or as they become older and have problems grooming, they may require baths or partial baths to stay clean.
We are as gods to the beasts of the fields. We order the time o' their birth and the time o' their death. Between times, we ha' a duty. - Terry Pratchett.
"Men have forgotten this truth", said the fox, "But you must not forget it. You become responsible, forever, for what you have tamed. - Antoine de Saint-Exupéry