Rabbits will not have diarrhea if they eat carrots. Carrots are one of the main foods for rabbits. They are rich in fiber and water, which help promote the normal functioning of the rabbit's digestive system. Rabbits' digestive systems are adapted to high-fiber foods, so eating carrots won't cause diarrhea. However, if your rabbit suddenly ingests large amounts of carrots or other new foods, it may cause indigestion or diarrhea.

Therefore, it is important to introduce new foods gradually and observe the rabbit's reaction