During the day Hippopotamus lolls about in a river or watering hole. She spends her nights on land, foraging for food. Water is the element of feelings and intuitive knowing and earth is the element of grounded practicality and stability. Hippo is at home in both realms. Hippopotamus medicine is invoked by those who wish to be in touch with their intuition, feelings and psychic abilities while staying grounded, practical and stable.
Source:http://freepages.religions.rootsweb.ancestry.com