Ondatra zibethicus (Common American Muskrat) is a species of rodents in the family cricetids . They are associated with freshwater habitat. They are found in The Nearctic. They are herbivores.
Definition: The duration of the development from fertilized, deposited or implanted egg to hatching/birth. Corresponds to egg incubation duration in oviparous animals and to gestation period duration in viviparous animals.