Embryonic development takes 3 months. Litter size is 2–4. Maturity occurs from 2 to 4 years. Offspring are 2–4; the female gives birth once a year. The young are born live and spend the first months in shelter under the mother's protection. The reproductive interval is 1 year. They inhabit and develop on land, outside of water bodies. Eggs, or young develop in a nest built on the ground or close to it. The nest is hidden in an underground burrow. A caring mother—the nest is hidden in an underground burrow, only the mother shows parental care for the offspring. Live birth—the young are born live on land, they do not hatch from eggs or larvae. Ordinary sexual—homogamy, reproduction always with fertilization, without a change of generations.