Forthcoming... Fact: A well cared for house rabbit that has been spayed or neutered early in life has a life expectancy of 8 to 12 years of age. Fact: The gestation period of a rabbit is about 31 days. Fact: A group of rabbits is called a herd. Fact: A group of rabbits lives in a warren. Keywords: Life-expectancy, life expectancy, life-span, life span, how long to rabbits live, gestation, lagomorphs.